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#2815746 - 11/27/12 10:11 AM Worst oil you have put in your car?
IndyIan Offline


Registered: 09/23/08
Posts: 5650
Loc: Ontario, Canada
Might be blasphemy here on BITOG but I know some of us have put less than ideal optimal oil in our cars. shocked
Here's my worst so far.
I got a new tractor last year and it recommends the first two oil changes be done at 50 hour intervals. Being a good BITOGer I put it Rotella T6 5W40 after I dumped the factory fill as it was just before winter.
Then come spring its time to change the tractor oil again and the cars too. I did the tractor first and watched 8L of synthetic oil with 50 hours on it drain into a semi clean bucket and thought it was a bit of a waste...
I ended up pumping 4L of the used tractor oil into the Neon. It was fairly black but after several months it seems to be doing the job in the Neon. I'm going to run it all winter and then we'll see if the car is still on the road. I might treat it with a jug of PYB!
I'm sure someone has done worse than though...
_________________________
07 Focus ZXW, 5spd manual, 92km M1 5W20
03 Tracker, 5spd manual, 262km, Valvoline Syn 5W30

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#2815748 - 11/27/12 10:13 AM Re: Worst oil you have put in your car? [Re: IndyIan]
Rand Offline


Registered: 08/20/03
Posts: 7787
Loc: Barberton,Ohio
so you reused break-in oil from a tractor?

ow.
I wouldnt be worried about clean I'd not like the breakin chunks, sand whatever.

Worst thing I ever did was reuse an oil filter on a tracker.

the oil fell out in chunks from the drain pan. and I think the filter was welded on.

It was impossible to get off at the time being surrounded by cv axle, exhaust, and various radiator hoses etc.

The tracker was used for a paper route and had 12000miles on conventional and was 2qts low....

Next oil change I did 2k later and changed the filter too :\

shortly thereafter the new oil started dissolving all the crud on the gaskets making it leak 1qt/1000miles which I think actually helped the engine live to 228k miles when the rest of the vehicle was junk (165000 paper route miles)

Since it actually leaked and didnt just burn.. it got checked weekly and actually topped off. I provided a handy one month gallon jug for that ;p.


Edited by Rand (11/27/12 10:17 AM)
_________________________
2015 Forester I-Premium 6MT


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#2815762 - 11/27/12 10:26 AM Re: Worst oil you have put in your car? [Re: IndyIan]
TallPaul Offline


Registered: 10/22/03
Posts: 12915
Loc: By Detroit
I once put used oil from my F150 into the Aerostar, but it only had maybe 1000 miles on it. Wanted to go to a thicker grade in the F150 and couldn't wait.
_________________________
"There is a slight vibration in it that I always attributed to something I can't explain." --Neil Young

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#2815764 - 11/27/12 10:28 AM Re: Worst oil you have put in your car? [Re: IndyIan]
supton Offline


Registered: 11/09/08
Posts: 4908
Loc: NH
Interesting... Not sure what would make it past the oil filter, but I'd think a good oil filter would filter out the large chunks pretty quick--then again, the tractor's oil filter likely did the same exact thing. No chunks should be in the oil, only possibly whatever casting flash was in the bottom of the oil pan.

Might change it on a short OCI though, in the Neon. 278Mm = 172kmiles, so that Neon isn't exactly new anymore. With that kind of miles it probably doesn't care.
_________________________
2004 VW Jetta Wagon, TDI, 5spd manual, 300kmile, his
2011 Toyota Camry, base, 6spd manual, 81k, hers
2010 Toyota Tundra double cab, 4.6L, auto, 89k

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#2815769 - 11/27/12 10:32 AM Re: Worst oil you have put in your car? [Re: IndyIan]
Clevy Offline


Registered: 11/11/10
Posts: 7404
Loc: Saskatoon canada
Worst oil. As far as what,performance as per a uoa,noise,what are the parameters.
As far as noisy every engine I ever put mobil 1 into made more valvetrain noise than the oil it replaced. Now I doubt very much the noise equated to additional wear however I don't like noisy.
I put the mobil 1 v-twin 20w-50 into my Harley after I broke it in on pennzoil,immediately the top end made such a racket I though something was broken. I went to the shop and asked them to check it out. They agreed that something sounded broken.
So off come the rocker boxes for inspection,compression test etc. 250 bucks later they found nothing wrong.
I took the bike home,grabbed 3 quarts of rp 20w-50 automotive oil,drained the junk mobil 1,started the bike and BAM,whisper quiet top end.
Never again will I spend money on mobil 1
_________________________
2006 Charger RT
Miles x 2 per oil filter

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#2815770 - 11/27/12 10:34 AM Re: Worst oil you have put in your car? [Re: IndyIan]
d00df00d Offline


Registered: 10/20/05
Posts: 9218
Loc: PA
I'm pretty sure my introductory post here at BITOG had to do with mixing straight-30 engine oil with Lucas Oil Stabilizer to use as a gear lube for my old '95 Maxima's 5-speed manual transaxle -- which specced 75w-90 GL4. Not my proudest moment, but certainly worth a few yucks in retrospect...
_________________________
2011 Mazda RX-8 R3
Castrol GTX 5w-20

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#2815776 - 11/27/12 10:37 AM Re: Worst oil you have put in your car? [Re: IndyIan]
IndyIan Offline


Registered: 09/23/08
Posts: 5650
Loc: Ontario, Canada
It wasn't the tractor break-in oil from the factory, but for some reason they still do a second 50hr change interval and then go to 100hr intervals after that. I figured in the Neon I probably run more like 200hrs between oil changes so 50 hours in a understressed diesel shouldn't be too bad?
The Neon is rusting out now so it days are definitely numbered anyways. I would bet alot of money that it won't die of engine lubrication related causes. The rust will get it first!
_________________________
07 Focus ZXW, 5spd manual, 92km M1 5W20
03 Tracker, 5spd manual, 262km, Valvoline Syn 5W30

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#2815795 - 11/27/12 10:47 AM Re: Worst oil you have put in your car? [Re: IndyIan]
eljefino Offline


Registered: 06/15/03
Posts: 24170
Loc: ME
I put 5w20 in a tired dodge 3.9 and the oil light kept coming on at idle. LOL


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#2815824 - 11/27/12 11:17 AM Re: Worst oil you have put in your car? [Re: IndyIan]
ARCOgraphite Offline


Registered: 05/17/09
Posts: 8594
Loc: N.H, U.S.A.
LOS on top of some SM valvoline in my 4x4 Chevy 4.3 WT. Peak SM 5w30 in the 05 RAV4. Actuall had some bad Kendall 5w30 once too.
Good suff: EXxon Superflo or FS was the low buck treat back then.


Edited by ARCOgraphite (11/27/12 11:18 AM)
_________________________
2014 Nissan Note S 5MT, OC#1 1630mi-PGB 5W30+NISSAN Mexico 65F0C Filter
2015 Forester 6MT 5Door, OC#1 4361mi-VSP 0W20(?)+ Blue service "FRAM" Filter

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#2815829 - 11/27/12 11:23 AM Re: Worst oil you have put in your car? [Re: eljefino]
donnyj08 Offline


Registered: 08/12/12
Posts: 1042
Loc: indiana
Originally Posted By: eljefino
I put 5w20 in a tired dodge 3.9 and the oil light kept coming on at idle. LOL



It looks like the idle is set to low to provide optimal oil pressure. it seems fine when the tack shows 500+ rpm

I haven't used a bad oil yet. I didn't like M1 5w20 in my f150, it was noisy. that truck ran best on Mobil super synthetic or PYB


Edited by donnyj08 (11/27/12 11:24 AM)
_________________________
2000 Corvette FRC. 5w30 QSUD; P1
2008 nissan Armada. 10w30 QSUD; Purolator Classic
2012 Yamaha FZ6R. 10w40 M1 4T SYN

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#2815832 - 11/27/12 11:25 AM Re: Worst oil you have put in your car? [Re: IndyIan]
95busa Offline


Registered: 10/15/05
Posts: 1068
Loc: Tennessee
Catrol 30w in the cardboard can circa early eighties. Put it into a early 90's Nissan 4x4 4cyl. No issues.
_________________________
2005 Ford F250 Super Duty 4x4
2009 Dodge Grand Caravan
2006 Chrysler Pacifica Touring

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#2815869 - 11/27/12 11:59 AM Re: Worst oil you have put in your car? [Re: IndyIan]
uart Offline


Registered: 06/09/10
Posts: 723
Loc: Australia
Worst oil?

This 20W70:

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#2815885 - 11/27/12 12:12 PM Re: Worst oil you have put in your car? [Re: IndyIan]
eljefino Offline


Registered: 06/15/03
Posts: 24170
Loc: ME
Re my Dakota oil light, it's a computer controlled idle and IMO the tach reads a little low.

The oil light came on when I was starting off from a stop-- stick shift, lugging, dropping the RPMs slightly.

Anyway it wasn't the best thing and now I'm running 15w40 and straight 30 weight and plan to keep it in there through the winter. LOL

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#2815887 - 11/27/12 12:16 PM Re: Worst oil you have put in your car? [Re: eljefino]
Zaedock Offline


Registered: 09/10/05
Posts: 3838
Loc: Massachusetts
Originally Posted By: eljefino
... and straight 30 weight and plan to keep it in there through the winter. LOL


Is that from the Delo deal? I'm down to two gallons of SAE30 and one 15W40.
_________________________
2012 F150 Ex-cab 5.0L/2004 Malibu Maxx LT
1992 YJ "The Heep"/1994 Olds Cutlass Ciera 3.1/auto
1975 Ford Bronco/1959 Willys CJ5/20XX Custom rock crawler

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#2815890 - 11/27/12 12:21 PM Re: Worst oil you have put in your car? [Re: IndyIan]
DrDusty86 Offline


Registered: 01/04/11
Posts: 1491
Loc: TX
By far the worst was M1 5w30. Check out my UOA. Looking at the wear metals, I must have taken 50k miles of the engines life.. NEVER again will I make that mistake of using THAT brand. I don't care if they have changed formulations, I still don't trust that oil

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#2815897 - 11/27/12 12:27 PM Re: Worst oil you have put in your car? [Re: IndyIan]
zerosoma Offline


Registered: 08/12/11
Posts: 2244
Loc: south dakota, usa
Peak Synthetic. Yuck.
_________________________
2004 Hyundai Santa Fe LX 3.5L (98k) [Pennzoil Ultra 5w20/Napa Gold]
2005 Toyota Prius (202k) [Mobil Super Synthetic 0w20/Napa Gold]

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#2815900 - 11/27/12 12:28 PM Re: Worst oil you have put in your car? [Re: IndyIan]
morepwr Offline


Registered: 01/17/12
Posts: 1288
Loc: ventura, ca
I dont know if its the worst oil or just the worst application, but I used gear oil once to top off and old wagoneer I had with 150K+ miles and burned oil like crazy. It was all I had and I was broke so I ran it. It didnt make one bit of difference in the way it ran but it sure smelled terrible burning it off!


Edited by morepwr (11/27/12 12:28 PM)

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#2815902 - 11/27/12 12:30 PM Re: Worst oil you have put in your car? [Re: IndyIan]
Donald Offline


Registered: 03/21/04
Posts: 13535
Loc: Upstate NY
Any oil bought at a 7-11 type of store.
_________________________
2001 Jeep Grand Cherokee Laredo 4.0 - PP & M1
1999 Dodge Ram 2500 w/Cummins - Rotella T6 & M1
Amsoil ATF in both vehicles & Magnefine filter.

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#2815915 - 11/27/12 12:41 PM Re: Worst oil you have put in your car? [Re: IndyIan]
simple_gifts Offline


Registered: 07/26/04
Posts: 9038
Loc: Middlesex County CT
GTX @ full price.
_________________________
2003 Echo >349K miles;Supergard 5W-[23]0;
2006 B2300;88K;ALM

Not sure what you want to pay for, but Linux never produced a dancing paperclip.

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#2815987 - 11/27/12 01:40 PM Re: Worst oil you have put in your car? [Re: IndyIan]
callbay Offline


Registered: 05/29/05
Posts: 610
Loc: Ozark Mountains
My son was given a welder with a 30 HP v twin engine and a bad oil leak. We checked the oil when we got it and it had a half a a cup of part oil and part water. Son had just demonstrated that the welder started before we checked the oil.

To flush out the water I used an unknown mixture of our car drain oi and ran the generator for a short time to warm it up. I put in new oil and filter and the oil has stayed clean and my son fixed the leak.

Moral of the story. Don't trust low oil shut offs!

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#2815996 - 11/27/12 01:46 PM Re: Worst oil you have put in your car? [Re: IndyIan]
rjundi Offline


Registered: 03/16/04
Posts: 6330
Loc: New England
Left 20W50 in my 1988 Jetta GLI 16v over a new england winter. It made lots of interesting sounds starting smile It was installed in New Mexico in summer by an import shop.

Thankfully most cold starts were in a 35F garage. But the ones <0F it barely turned over.
_________________________
2005 Legacy GT wagon 5mt - 172k - Mobil 5000/OEM Subie filter

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#2816028 - 11/27/12 02:33 PM Re: Worst oil you have put in your car? [Re: IndyIan]
tig1 Offline


Registered: 01/03/09
Posts: 9855
Loc: Illinois
In the mid and late 60s I used QS in my 64 Valiant slant 6. I used it for 50K at 2K OCIs and it sludged the engine to the point I had to scoop the stuff out. I switched to Valvoline HD straight 20wt and it was much improved.
_________________________
2007 Ford Fusion 144,000 miles
M1 0-20
2007 Ford Focus 129,000 miles
M1 0-20
10,000 mile OCIs on both engines
M1 ATF
M1 10-30 in all OPE

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#2816052 - 11/27/12 02:55 PM Re: Worst oil you have put in your car? [Re: eljefino]
TallPaul Offline


Registered: 10/22/03
Posts: 12915
Loc: By Detroit
Originally Posted By: eljefino
I put 5w20 in a tired dodge 3.9 and the oil light kept coming on at idle. LOL
Looks like Dodge followed Ford on the dummy gauge idea.

Hey what muffler do you have, has a nice tone to it. Lets hear it really rev up.

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#2816192 - 11/27/12 05:19 PM Re: Worst oil you have put in your car? [Re: TallPaul]
eljefino Offline


Registered: 06/15/03
Posts: 24170
Loc: ME
Originally Posted By: TallPaul
Originally Posted By: eljefino
I put 5w20 in a tired dodge 3.9 and the oil light kept coming on at idle. LOL
Looks like Dodge followed Ford on the dummy gauge idea.

Hey what muffler do you have, has a nice tone to it. Lets hear it really rev up.


It's an $18 Thrush turbo full size (not cherry bomb) that exits rear of the cab and has a two inch flat cut off spout. Truck is out on loan but when I get it back I'll make a video.

It's particularly awesome decellerating in 2nd gear with a cold motor.

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#2816314 - 11/27/12 07:21 PM Re: Worst oil you have put in your car? [Re: IndyIan]
Blkstanger Offline


Registered: 08/13/11
Posts: 666
Loc: San Diego CA
Worst oil was a bad batch of Amsoil 20w50 I put in my harley. Engine started getting real noisy about 40 miles into my ride. I went right home and dumped what looked like water out of it. The OCI could have been measured in hours. That was the first and last time I tried Amsoil. Went back to running Redline and never had another problem.
_________________________
99 Ranger Supercab 4x4 4.0 150,000
QS Defy 10w30 Motorcraft FL-1A

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#2816417 - 11/27/12 09:31 PM Re: Worst oil you have put in your car? [Re: IndyIan]
jdawg89 Offline


Registered: 08/27/12
Posts: 240
Loc: new york
Castrol edge = worst vavetrain noise ive ever heard in a vehicle. And as of now the amsoil 10w40 in my quad has been a bad batch...terrible ticking noise...

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#2816459 - 11/27/12 10:26 PM Re: Worst oil you have put in your car? [Re: IndyIan]
Doug Hillary Online   content


Registered: 05/30/03
Posts: 4859
Loc: Airlie Beach Australia
Hi,
Indylan - The original Castrol Forumula SLX 0w-30 (German made - ester based - green) of around 1996-7

It was prone to rapid and serious varnish deposits in some engine families

After a number of engine issues the product was rapidly updated and finally withdrawn
_________________________
Regards
Doug

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#2816468 - 11/27/12 10:39 PM Re: Worst oil you have put in your car? [Re: Blkstanger]
Clevy Offline


Registered: 11/11/10
Posts: 7404
Loc: Saskatoon canada
Originally Posted By: Blkstanger
Worst oil was a bad batch of Amsoil 20w50 I put in my harley. Engine started getting real noisy about 40 miles into my ride. I went right home and dumped what looked like water out of it. The OCI could have been measured in hours. That was the first and last time I tried Amsoil. Went back to running Redline and never had another problem.

Funny you mention that. Last year I tried the Amsoil 10w-40 in my yamaha 1100 v-star. Same thing. Top end noise was unreal. Drained it for gtx and the bike ran great. Then I discovered rotella and stuck with it.
_________________________
2006 Charger RT
Miles x 2 per oil filter

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#2816480 - 11/27/12 10:57 PM Re: Worst oil you have put in your car? [Re: IndyIan]
SLO_Town Offline


Registered: 03/03/11
Posts: 239
Loc: California's Central Coast Win...
I can honestly say I've never put anything but the best oil of the era into any of my cars - and I'm 59 years old.

Even an well used 1963 Chevy Nova with a big inline six (292cu?) was given Castrol GTX, probably 20W-50, when my wife and I were first married and so broke we were eating rice and beans.

GTX at the time was considered good stuff. This was when it was in the old cardboard cans!

Scott
_________________________
2003 BMW 330Ci ZSP (Motul 300V 5W-30)
2010 Honda Element SC (Castrol Syntec 0W-20)
2011 BMW 328i M-Sport (Belgian Castrol 0W-30)

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#2816526 - 11/28/12 01:30 AM Re: Worst oil you have put in your car? [Re: IndyIan]
MinamiKotaro Offline


Registered: 08/01/12
Posts: 638
Loc: TN
Any time I used Valvoline oil in my cars, or even my lawnmower, I experienced rapid oil consumption. The only time I ever had to add top off oil to my Saturn was when I used Valvoline synthetic.
_________________________
1967 VW Beetle: Mag1 5-40 Fleet/NAPA 41516
2004 Saturn Ion: PYB 10w-30/Wix 51782-XP
2014 Polaris Ranger 570: Mobil1 5-50/Wix 51356

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#2820309 - 12/01/12 01:30 PM Re: Worst oil you have put in your car? [Re: IndyIan]
ledslinger Offline


Registered: 06/21/09
Posts: 856
Loc: Missouri
About 5 years ago, I ran QS 5W-30 in my daughter's 1999 Accord and it consumed it at about a quart every 1k miles. I ran Mobil Clean 5000 next and it consumed about a quart in 3K. That formulation of QS didn't work well in that Accord.

This illustrates the magnitude of problems I've had running name brand dinos and synths for the 42 years I've been maintaining many cars.

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#2820386 - 12/01/12 02:44 PM Re: Worst oil you have put in your car? [Re: IndyIan]
04SVT Offline


Registered: 03/19/11
Posts: 133
Loc: Texas
I know it's a site favorite but pennzoil yellow bottle. Because of what I've personally seen it due to several engines; I won't ever use a pennzoil product again. Absolutely nasty sludge inside the engine. Plus, it cooked off in a friends camaro during a high speed run; it ruined the engine. The camaro had nothing but pennzoil yellow bottle in it for its whole life.

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#2820529 - 12/01/12 05:03 PM Re: Worst oil you have put in your car? [Re: 04SVT]
afoulk Offline


Registered: 01/29/08
Posts: 1078
Loc: Palmyra, PA
Originally Posted By: 04SVT
I know it's a site favorite but pennzoil yellow bottle. Because of what I've personally seen it due to several engines; I won't ever use a pennzoil product again. Absolutely nasty sludge inside the engine. Plus, it cooked off in a friends camaro during a high speed run; it ruined the engine. The camaro had nothing but pennzoil yellow bottle in it for its whole life.

Thats funny, I work with a guy that has run nothing but PYB in his Chevy Cavalier since new, and he now has almost 350,000miles on it. Running on borrowed time I guess.
_________________________
2012 Scion XB 5spd

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#2820567 - 12/01/12 05:31 PM Re: Worst oil you have put in your car? [Re: IndyIan]
KD0AXS Offline


Registered: 11/13/12
Posts: 1220
Loc: Nowthen, MN
Buddy had a Beretta with the 3.1 in it. It started knocking like crazy, so we dumped in 3 quarts of 20W-50 and 2 quarts of STP oil treatment. I've never heard one of those GM V-6s run so quiet. crush
_________________________
2005 Ford F-350 4x4 5.4 - Maxlife 5W-20
2013 Jeep Wrangler Unlimited - PP 5W-20
2000 Saturn SC2 - Maxlife NG 10W-40
2000 John Deere 425 - Rotella T6

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#2820624 - 12/01/12 06:20 PM Re: Worst oil you have put in your car? [Re: IndyIan]
Oil Changer Offline


Registered: 08/28/06
Posts: 1413
Loc: Detroit Metro
Valvoline. Worst. Never again.

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#2820686 - 12/01/12 07:28 PM Re: Worst oil you have put in your car? [Re: IndyIan]
TFB1 Offline


Registered: 09/03/10
Posts: 2622
Loc: VA
Back in the '60s when I didn't know any better, I was buying Kenwood 30W for a old oil burner '57 Ford I had(1st car)... Stated on can was for Hi-Compression engines, hydraulic lifters, etc but had no API classification... I found after maybe three months there was sludge building up inside the valve covers, didn't have that problem with QS HD 30w I had prev used... After I cleaned out the covers, I went back to the QS and had no more sludge...

As far as running, was no different than any other oil... Only time I've seen a noticeable difference in 46+ years of oil changes is immediately after a change when the oil likely had significant fuel dilution, or had dumped something like Rislone or MMO in the crankcase... I haven't used any of that stuff in the past 25years or so, last was in sludged up 3.3L Chevy V6...

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#2820869 - 12/01/12 10:58 PM Re: Worst oil you have put in your car? [Re: afoulk]
04SVT Offline


Registered: 03/19/11
Posts: 133
Loc: Texas
Originally Posted By: afoulk
Thats funny, I work with a guy that has run nothing but PYB in his Chevy Cavalier since new, and he now has almost 350,000miles on it. Running on borrowed time I guess.


That is cavalier for crying out loud. Probalby just puts around from point a to point b. Normal commute and all. I never said one would be running on borrowed time with it. I bet the inside of that motor is nasty though. My grandfather ran PYB in his 63 step side and changed it religiosly at 3k miles. The inside of that engine was disgusting. Dirtiest engine I've every been in. Tore down another buddies 302 that ran pyb also; same thing.

I'm sorry if you like PYB and I offended you. There is no reason to get offended because someone doesn't like the same thing. Heck, there is no reason because someone says something I like is garbage. I bet there are a ton of people that think my mustang is a piece of junk. Even if they told me; I'm not going to get offended and try to defend it. I like it; and that's good enough for me. Again, sorry if I upset you. It truly wasn't my intention. I just stated what I think to be the worst oil I've ever used.

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#2820978 - 12/02/12 03:32 AM Re: Worst oil you have put in your car? [Re: IndyIan]
cathy Offline


Registered: 05/17/11
Posts: 149
Loc: usa
me 2: Mobil 1 15w-50 (in bmw 6 cylinder). did not give any benefits.
(probably for very hi temp- racing)
20W straight (for california) heard noise right away
Subjectively: Valvoline doesnt seem that good
Used these in my bmw- smoke@tailpipe@ 60k miles,
frequent oil change, original owner.


Edited by cathy (12/02/12 03:35 AM)
_________________________
97 camry.

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#2821115 - 12/02/12 09:17 AM Re: Worst oil you have put in your car? [Re: cathy]
fdcg27 Offline


Registered: 09/25/09
Posts: 9416
Loc: OH
I did one 6K run of M1 15W-50 in my four cylinder BMW.
I used the oil because I had it, having bought it on clearance figuring I'd either trade it or find a use for it.
I'd bought it cheaply enough from Meijer and Target that I could have used it in my mowers.
The engine seemed perfectly happy with the oil, smooth, quiet and as willing to rev as it is on the forty grades I've mostly used.
I can't think of any oil I've ever used in any engine that seemed really bad.
I have used oils with high expectations that went unfulfilled, like Edge SM, but I can't recall any oil being notably bad in use.
_________________________
12 Accord LX 22K HGMO 0W-20
09 Forester 64K PU 5W-30
02 Accord 127K G-Oil 5W-30
01 Focus ZX3 98K Synpower 10W-30
95 BMW 318iC 149K Defy 10W-40

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#2821579 - 12/02/12 04:01 PM Re: Worst oil you have put in your car? [Re: tig1]
Kuato Online   confused


Registered: 10/23/05
Posts: 3139
Loc: Northeastern MT
Originally Posted By: tig1
In the mid and late 60s I used QS in my 64 Valiant slant 6. I used it for 50K at 2K OCIs and it sludged the engine to the point I had to scoop the stuff out. I switched to Valvoline HD straight 20wt and it was much improved.


Same experience with my '74 and '78 leaning towers of power. I changed it before I had to scoop it out though.

To this day I have an aversion to Quaker State.


Edited by Kuato (12/02/12 04:02 PM)
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Amsoil


88 Dodge D150, 318 2wd MT 176k
04 Jeep Wrangler 2.4 MT 186k
13 F150 5.0 4x4 24k

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#2822056 - 12/03/12 06:09 AM Re: Worst oil you have put in your car? [Re: Oil Changer]
uart Offline


Registered: 06/09/10
Posts: 723
Loc: Australia
Originally Posted By: Oil Changer
Valvoline. Worst. Never again.


Was this a particular viscosity/type or valvoline, or do you consider all valv~ oil bad?

Personally I've never had any problems with that brand.

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#2822061 - 12/03/12 06:19 AM Re: Worst oil you have put in your car? [Re: eljefino]
turbokick Offline


Registered: 09/10/12
Posts: 50
Loc: East Of Heaven
Originally Posted By: eljefino
I put 5w20 in a tired dodge 3.9 and the oil light kept coming on at idle. LOL




Dedicated to the defenders of ĘthinĘ oils...
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BMW 323ti compact - Motul 300V Competition 15W-50
Motul Products in LSD, tranny, brakes

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#2822155 - 12/03/12 08:29 AM Re: Worst oil you have put in your car? [Re: IndyIan]
jeepman3071 Offline


Registered: 04/15/10
Posts: 1759
Loc: Storrs, Connecticut
Mobil 1. I've put it in several cars that had never consumed oil before and did on Mobil 1. I like how they have so many different grades available and seem to offer a wider range of products compared to some other brands, but if I pay that price I'd like it to stay in the sump.
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2000 Jeep Cherokee Sport 4.0L (147k) - PYB 10w30, Napa Silver 31085, Magnefine trans filter

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#2822278 - 12/03/12 10:42 AM Re: Worst oil you have put in your car? [Re: jeepman3071]
TFB1 Offline


Registered: 09/03/10
Posts: 2622
Loc: VA
Originally Posted By: jeepman3071
Mobil 1. I've put it in several cars that had never consumed oil before and did on Mobil 1. I like how they have so many different grades available and seem to offer a wider range of products compared to some other brands, but if I pay that price I'd like it to stay in the sump.


Sounds like I'd stop banging my head on the wall but the pain feels so good..

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#2822279 - 12/03/12 10:43 AM Re: Worst oil you have put in your car? [Re: IndyIan]
73 BGT Offline


Registered: 02/02/06
Posts: 34
Loc: Mid-Michigan
Trying to get back from Kansas to Michigan. Bought a '65 chevy Impala for 100.00 (it was a p.o.s. but cheaper than a bus ticket) It was using so much oil that I pulled into a truck stop and got 5 gallons of used Diesel oil. Ran out of that and had to get more, prior to making it home. This was in 1975. Now I wonder if the oil filter was even working. RP


Edited by 73 BGT (12/03/12 10:44 AM)
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2011 Subaru STI Rotella T-6
2003 Jeep Grand Cherokee Overland 4.7 H.O. German Castrol
2010 Nissan 370Z Rotella T-6

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#2822407 - 12/03/12 12:52 PM Re: Worst oil you have put in your car? [Re: 73 BGT]
lexus114 Offline


Registered: 05/12/08
Posts: 6016
Loc: Easton, PA
Originally Posted By: 73 BGT
Trying to get back from Kansas to Michigan. Bought a '65 chevy Impala for 100.00 (it was a p.o.s. but cheaper than a bus ticket) It was using so much oil that I pulled into a truck stop and got 5 gallons of used Diesel oil. Ran out of that and had to get more, prior to making it home. This was in 1975. Now I wonder if the oil filter was even working. RP



Man,the car was only ten years old in 75? Did it have a ton of miles on it or something?
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2012 Mercedes-Benz C300 4matic
2015 Lexus RX350 AWD

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#2822427 - 12/03/12 01:11 PM Re: Worst oil you have put in your car? [Re: IndyIan]
73 BGT Offline


Registered: 02/02/06
Posts: 34
Loc: Mid-Michigan
Actually the body was quite nice. 2dr, 3spd on the floor. The whole drive train was shot. I thought the universal(s) would let loose before I got home. Yeah, I know, if I knew then what I know now. (427 4spd has a nice ring to it!) RP
_________________________
2011 Subaru STI Rotella T-6
2003 Jeep Grand Cherokee Overland 4.7 H.O. German Castrol
2010 Nissan 370Z Rotella T-6

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#2822436 - 12/03/12 01:21 PM Re: Worst oil you have put in your car? [Re: 73 BGT]
lexus114 Offline


Registered: 05/12/08
Posts: 6016
Loc: Easton, PA
Originally Posted By: 73 BGT
Actually the body was quite nice. 2dr, 3spd on the floor. The whole drive train was shot. I thought the universal(s) would let loose before I got home. Yeah, I know, if I knew then what I know now. (427 4spd has a nice ring to it!) RP



I cant begin to tell you how many times I`v said that to myself. grin
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2012 Mercedes-Benz C300 4matic
2015 Lexus RX350 AWD

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#2822441 - 12/03/12 01:26 PM Re: Worst oil you have put in your car? [Re: 04SVT]
Clevy Offline


Registered: 11/11/10
Posts: 7404
Loc: Saskatoon canada
Originally Posted By: 04SVT
I know it's a site favorite but pennzoil yellow bottle. Because of what I've personally seen it due to several engines; I won't ever use a pennzoil product again. Absolutely nasty sludge inside the engine. Plus, it cooked off in a friends camaro during a high speed run; it ruined the engine. The camaro had nothing but pennzoil yellow bottle in it for its whole life.

Interesting.
The 4.6L 4V I just bought with 50000kms on it has had nothing but pyb in it since new and when I replaced the valve covers it is absolutely spotless underneath. I guess it's application dependent.
I bought the engine from the original purchaser of the car,I was concerned about his claims of mileage and maintenance because the car itself was totalled and all that's left is the shaker intake and engine. He then provided me service records for the car. It was taken to the great Canadian oil change every 5000kms and fed 5w-20 pyb.
API certified or not,I guess some oils just don't perform as well as others in different engines and perhaps brand does matter.
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2006 Charger RT
Miles x 2 per oil filter

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#2822791 - 12/03/12 06:27 PM Re: Worst oil you have put in your car? [Re: Clevy]
Garak Offline


Registered: 12/05/09
Posts: 11646
Loc: Regina, Saskatchewan, Canada
Originally Posted By: Clevy
API certified or not,I guess some oils just don't perform as well as others in different engines and perhaps brand does matter.


Remember that most of the anecdotes in this thread are from pretty dated oils, back when none of the conventionals were overly stellar, particularly in the 10w-40 variety.
_________________________
Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Hastings LF113
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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#2822919 - 12/03/12 07:57 PM Re: Worst oil you have put in your car? [Re: IndyIan]
Stephen_G Offline


Registered: 04/12/12
Posts: 406
Loc: Mount Holly New Jersey
For noise, Mobil Super 5000 5W20, first and only time i put a 5W20 in my car, after that i am sticking to xW30, probably 10W30.

Co-Workers make fun of me for using Valvoline Next Gen, saying it is absolute [censored], due to being recycled, the car loves it but the price point is too high for what you get, i can get mobil super for less.

Future oil changes

Pennzoil Yellow bottle, 5W30 with a Purolator Pure One filter

Mobil Super 5000 10W30, with a Purolator Filter

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#2822970 - 12/03/12 08:56 PM Re: Worst oil you have put in your car? [Re: IndyIan]
oldhp Offline


Registered: 06/28/12
Posts: 832
Loc: Southern Illinois
1972. At my first service station job this older man pulls in with a 1970/1971 (not sure) Dart 318/auto. Engine is making all kinds of noise. Jack says pull valve covers. It looked like a jello mold of valve cover. The gentleman swore by Shell oil.
Long story short, high parafin/wax content. The car never left town, never got warmed up. Cleaned out as much as could, VC's back on, 20wt Gulf oil, cardboard in front of radiator, got it HOT. You should have seen the lumps and [censored] that came out.
So, yes oils back then were not very good at almost everything like they are today.
The gentleman still insisted on using Shell oil.......
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2014 RAM Express 3.6/8 speed work truck.
2012 Equinox 2.4-Wife's Ride


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#2823013 - 12/03/12 09:57 PM Re: Worst oil you have put in your car? [Re: 04SVT]
Blkstanger Offline


Registered: 08/13/11
Posts: 666
Loc: San Diego CA
Originally Posted By: 04SVT
I know it's a site favorite but pennzoil yellow bottle. Because of what I've personally seen it due to several engines; I won't ever use a pennzoil product again. Absolutely nasty sludge inside the engine. Plus, it cooked off in a friends camaro during a high speed run; it ruined the engine. The camaro had nothing but pennzoil yellow bottle in it for its whole life.
Years ago PYB was known for sludge. I had a buddy that worked as an automotive machinist. He asked every customer what oil they had been running before he tore into it. He told me he would never run Pennzoil after the things he saw.
PYB is a whole different animal now days and some good stuff.
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99 Ranger Supercab 4x4 4.0 150,000
QS Defy 10w30 Motorcraft FL-1A

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#2824383 - 12/05/12 12:42 AM Re: Worst oil you have put in your car? [Re: IndyIan]
andrew_g Offline


Registered: 11/20/12
Posts: 29
Loc: Illinois
Not my personal vehicle but put "Conklin" brand oil in my dad's 2000 durango and was running it the 15,000 it claimed to be good for well it ended up coming out clumpy and trashing the motor in a vehicle that was never driven hard and always serviced by the dealer

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#2824392 - 12/05/12 01:57 AM Re: Worst oil you have put in your car? [Re: IndyIan]
Shannow Online   content


Registered: 12/12/02
Posts: 26830
Loc: a prison island
My first car has full of sludge (literally, the rockers had their own grooves in the black gunk, and 1/2L from nothing on the dipstick to full demonstrated that the crank probably had it's own groove too).

Scraped out as much as I could, and flushed it with kero (filled it and ran it at idle).

Used home brand 20W-40 re-refined (prolly recycled), and it used a litre that week. Changed it again, and it used a litre the next week.

Put XLD in it, and it dropped to about 1L/5,000km.

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#2869539 - 01/13/13 05:57 PM Re: Worst oil you have put in your car? [Re: IndyIan]
84zmyfavorite Offline


Registered: 07/14/10
Posts: 669
Loc: Wenatchee, W.A.
AMSOIL.

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#2869888 - 01/13/13 09:44 PM Re: Worst oil you have put in your car? [Re: IndyIan]
DirtRacer53 Offline


Registered: 06/28/12
Posts: 119
Loc: South Central PA, US
Worst oil that I had in my truck was castrol Edge SPT 5w-30. Around 2k miles I noticed that my oil pressure gauge was lower than normal. Checked the oil, levels were where they should be. Decided to change the oil & filter and the oil came out like water. Put in Pennzoil Platinum 5w-30 and same amount of time and miles later, no problems at all. I had QSUD 5w-30 in before the castrol, and I didn't have the problem then. The castrol really sheared
in my engine.

My engine hates Castrol products, but loves SOPUS products. I have some Valvoline Synpower 5w-30 I bought 2 weeks ago I'm going to try when its time for my oil change. But no more Castrol for me.
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2005 Chevy Silverado 1500 4.3L
Current Fill: QSUD 5W-30
Fram TG3387A Oil Filter
Fram TGA8755A Air Filter

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#2869905 - 01/13/13 10:02 PM Re: Worst oil you have put in your car? [Re: IndyIan]
jkhawaii Offline


Registered: 06/03/05
Posts: 446
Loc: Oahu
Some generic rerefined oil in my old rabbit diesel from wal mart


Edited by jkhawaii (01/13/13 10:03 PM)
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Previous vehicle 2008 Pontiac G5 OLM and factory oil's mostly.
Currently 2013 GMC Terrain 2.4L FWD.
2012 Piaggio Fly 50 4T 4V. 2013 Honda PCX 150

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#2869911 - 01/13/13 10:07 PM Re: Worst oil you have put in your car? [Re: 04SVT]
electrolover Offline


Registered: 12/04/10
Posts: 3192
Loc: TEXAS
Originally Posted By: 04SVT
I know it's a site favorite but pennzoil yellow bottle. Because of what I've personally seen it due to several engines; I won't ever use a pennzoil product again. Absolutely nasty sludge inside the engine. Plus, it cooked off in a friends camaro during a high speed run; it ruined the engine. The camaro had nothing but pennzoil yellow bottle in it for its whole life.


I hear ya! This is a pic of my explorer at 100k. The first 50k it only ran the dreaded QSGB and the next 50k was with that sludge in a bottle PYB! As you can see its wrecked!
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2004 F150 5.4 160k-Castrol TXT 5/40, Distance+ 3410-KREEN
2004 Explorer 4.0 130k-PU 5w30, Distance+ 3410

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#2869918 - 01/13/13 10:13 PM Re: Worst oil you have put in your car? [Re: IndyIan]
electrolover Offline


Registered: 12/04/10
Posts: 3192
Loc: TEXAS
Back on topic.
When I was a kid I drove a wore out 4cylinder fiero. I had to put oil in it every time I stopped for gas. I would put anything in it. Whatever I could get for a buck at the gas station. Some of that 10/30 was as thick as 90 weight and had a green tint to it. I also put a qt of used air compressor oil in it once from work.I never changed the oil either. When I got another car I gave it to a friend of mine free of charge...and was glad to be rid of it
_________________________
2004 F150 5.4 160k-Castrol TXT 5/40, Distance+ 3410-KREEN
2004 Explorer 4.0 130k-PU 5w30, Distance+ 3410

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#2869922 - 01/13/13 10:20 PM Re: Worst oil you have put in your car? [Re: IndyIan]
electrolover Offline


Registered: 12/04/10
Posts: 3192
Loc: TEXAS
This is what happens when you dont use Pennzoil. LOL

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2004 F150 5.4 160k-Castrol TXT 5/40, Distance+ 3410-KREEN
2004 Explorer 4.0 130k-PU 5w30, Distance+ 3410

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#2869925 - 01/13/13 10:26 PM Re: Worst oil you have put in your car? [Re: uart]
Torrid Offline


Registered: 11/07/10
Posts: 403
Loc: Las Vegas, NV
Originally Posted By: uart
Worst oil?

This 20W70:


Wow, what a sales pitch.

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#2869958 - 01/13/13 11:37 PM Re: Worst oil you have put in your car? [Re: IndyIan]
addyguy Offline


Registered: 09/08/05
Posts: 13429
Loc: Canada
Years ago, dad's best friend gave him his 1976 AMC Gremlin when he was done with it to do whatever he wanted with it.

I cleaned out the contents of the hatch and found a really old bottle of a low-buck 10W-30...it might have been Sears Spectrum or CT oil.

Hung onto it for no real reason, and about 10 years after that, borrowed a buddy's oil-burning 1987 Mercury Tracer and had to add oil to it.

Didn't want to spend 'good' money on oil for it, so I dumped this bottle of oil...it was dark and thick, I vaguely remember. Car ran fine, but I wish I'd kept it as a collectible....
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2003 Mazda Tribute LX V-6, 172k miles.
Oil: QS Defy 5W-20; Fram Ultra XG2 filter.

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#2870035 - 01/14/13 03:14 AM Re: Worst oil you have put in your car? [Re: IndyIan]
Smart_Guy Offline


Registered: 07/23/11
Posts: 20
Loc: Kingdom of Saudi Arabia, Weste...
More like; wrong oil, not bad oil.

Used 10w30 on my MB w124 and later in the same day found out (from the owner's manual) that these old engines use this grade for ambient temps lower than 10C (50F). Temps here never even come close to 15C (59F)in worst winter days.

That would have blew up the engine.

Speaking of bad oil, never heard of such a thing here in Saudi Arabia where oil is cheap and found every where smile
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Current Vehicles:
Mercedes E-Class 1992 300e 12v gas engine
Ford Crown Victoria 2009

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#2870906 - 01/14/13 05:35 PM Re: Worst oil you have put in your car? [Re: IndyIan]
Bud Offline


Registered: 06/04/02
Posts: 145
Loc: Texas
Do not believe it was a bad oil but years ago I used Arco Graphite. What a mess that stuff was.
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2005 F-150 SC 5.4

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#2871026 - 01/14/13 06:54 PM Re: Worst oil you have put in your car? [Re: IndyIan]
RobertISaar Offline


Registered: 08/21/12
Posts: 141
Loc: Camden, MI, USA
combination of wrong grade and just [censored] oil to begin with:

Dollar General brand 20W50 in an engine that specs 5W-30... this was in ~2005 or so, that engine is still running around too(40K miles later), most recently filled with Mobil 5000 5W-30.

the fuel pump is controlled by a combination of the ECM and an oil pressure switch... whenever the oil pressure is above 4PSI or so, the switch will power the pump even if the ECM doesn't... shut it off with the oil still relatively cold and when it had 20W-50 in it, it ran for a good 4 seconds after the engine stopped.

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