Recent Topics
BMW V8 Oil Consumption Fix
by doc540
06/18/18 11:25 AM
More info on Valvoline Modern Engine Oil
by buster
06/18/18 11:07 AM
Shelf life of synthetic 2 stroke engine oil ?
by ScottMill
06/18/18 10:34 AM
Oil sample extraction
by Tikka
06/18/18 10:30 AM
Re-using building materials esp nails
by andyd
06/18/18 08:57 AM
Central A/C [censored] out
by TOMJ
06/18/18 08:43 AM
08 Scion tC under valve cover pics
by Highboy
06/18/18 08:39 AM
Storing extension ladded in garage?
by maverickfhs
06/18/18 08:27 AM
Do you let your tool batteries go dead in storage
by Snagglefoot
06/18/18 07:20 AM
Any news on what happened to this plane?
by Exhaustgases
06/18/18 02:36 AM
E4OD fluid ?
by Exhaustgases
06/18/18 02:23 AM
Update password ?
by meadows
06/17/18 11:59 PM
Delayed Sleep Phase Disorder
by Reddy45
06/17/18 11:56 PM
Nissan DLR put 0w20 in car that specs 5w30. worry?
by CrAlt
06/17/18 10:40 PM
revive Nicd battery
by Donald
06/17/18 10:27 PM
Need help finding an apartment for friend
by RazorsEdge
06/17/18 10:07 PM
ceratec with redline 5w30?
by 08z06
06/17/18 09:53 PM
does your COMCAST modem have weak wifi??
by edwardh1
06/17/18 09:50 PM
I hate stuck thermostats
by jakewells
06/17/18 09:49 PM
Mag1 75w90
by SavagePatch
06/17/18 09:32 PM
Newest Members
WtsTacoma01, Orion62, Revd, blinky1041, mostdecent
65262 Registered Users
Who's Online
85 registered (77GrandPrix, 5AcresAndAFool, 1JZ_E46, AndyB, 4WD, 8 invisible), 1737 Guests and 49 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65262 Members
67 Forums
285519 Topics
4765024 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 3 1 2 3 >
Topic Options
#4439026 - 06/22/17 10:40 PM 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles
Shannow Offline


Registered: 12/12/02
Posts: 39835
Loc: 'Stralia
Per the title, 3 off Crown Vics
Taxi Service in Las Vegas
Operation under generally similar conditions.
No make-up needed to 3,000 miles.
1-2qts needed to get to 15,000 miles.



What say the UOA experts on the serviceability of these oils in these engines ?

Where did the Fe go ? (sludge???)

Top
#4439037 - 06/22/17 10:49 PM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow]
69GTX Offline


Registered: 09/23/15
Posts: 3815
Loc: Connecticut
Looks like 5K-7.5K miles is all the first 2 oils are really good for as TBN/TAN cross over. My 4.6 Lincoln gets 3K-4K/6 month oil changes, mostly because I don't drive it enough.

I would have expected better results from this fleet. Others have suggested that running oils past 3K miles only shows less and less wear as the miles are piled on, even as the viscosity thickens up considerably. These results don't seem to support that theory. Not a believer in 5w-20 for the 4.6 Lincoln/Crown Vic/Grand Marquis engines. I've had several of them now, all running 5w-30 as originally specced from 1993-2000. Las Vegas is HOT too where that extra viscosity couldn't hurt any.
_________________________
----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs

Top
#4439051 - 06/22/17 11:10 PM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow]
Chris142 Online   content


Registered: 06/05/03
Posts: 16812
Loc: Deplorable in apple valley, ca
Try a 10w30
_________________________
02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40

Top
#4439054 - 06/22/17 11:14 PM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: 69GTX]
Shannow Offline


Registered: 12/12/02
Posts: 39835
Loc: 'Stralia
Originally Posted By: 69GTX
Others have suggested that running oils past 3K miles only shows less and less wear as the miles are piled on, even as the viscosity thickens up considerably. These results don't seem to support that theory.


Just as a heads up...these ARE the three cars in the cam/lifter produces less wear study.

Clearly there's a difference between a bench cam/lifter study on a benchtop, and what was ACTUALLY going on the the engines that the oil was obtained from.

Top
#4439071 - 06/22/17 11:49 PM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow]
69GTX Offline


Registered: 09/23/15
Posts: 3815
Loc: Connecticut
Thanks for that heads up Shannow.
_________________________
----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs

Top
#4439092 - 06/23/17 12:45 AM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow]
CharlieBauer Offline


Registered: 03/29/16
Posts: 1177
Loc: CA
Looks like the constant Las Vegas heat is oxidizing the oil in taxi service. They've all thickened out of grade between 5,000 and 7,500 miles, and TBN never reaches a number that on it's own suggests the oil needs changing. Only the TAN crossover indicates any issue on that front.

No idea how to interpret the wear metals. Do the high levels at 3,000 (and in one case higher) miles suggest wear metals in sludge areas are being liberated by the fresh oil?
_________________________
It ain't what you don't know that gets you into trouble. It's what you know for sure that ain't so.

- mistakenly attributed to Mark Twain

Top
#4439102 - 06/23/17 01:17 AM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow]
Garak Offline


Registered: 12/05/09
Posts: 24574
Loc: Regina, Saskatchewan, Canada
Viscosity ran nicely off the rails by the end. As I've mentioned many times, the taxis went always to 6,000 mile (10,000 km) OCIs with Quaker State conventional. On those engines that did need a new camshaft (wonderful Chevy small blocks), there was no sludging. We were able to go double the severe service OCI without penalty.
_________________________
Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, NAPA Gold 7356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515

Top
#4439245 - 06/23/17 08:47 AM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow]
CT8 Offline


Registered: 10/09/14
Posts: 10922
Loc: Idaho
What does 3 off mean?
_________________________
"Don't let your preconceived notions get in the way of facts."Geoff Metcalf"

Top
#4439265 - 06/23/17 09:15 AM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow]
oil_film_movies Offline


Registered: 06/13/16
Posts: 2548
Loc: MN
Reference Source? Where did these come from, and when? GF-3 and GF-4 are fossils.

Top
#4439274 - 06/23/17 09:21 AM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: CharlieBauer]
oil_film_movies Offline


Registered: 06/13/16
Posts: 2548
Loc: MN
Originally Posted By: CharlieBauer
No idea how to interpret the wear metals. Do the high levels at 3,000 (and in one case higher) miles suggest wear metals in sludge areas are being liberated by the fresh oil?
Very strange Fe fluctuations. That should be cumulative, with NO oil change, right?????

And people keep talking about sludge in these Vegas vehicles in a warm climate where they almost never run cold. Very few cold cycles.
Pistons WPD would be the big issue, not sludge.

Top
#4439309 - 06/23/17 09:59 AM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow]
Dyusik Offline


Registered: 09/26/14
Posts: 1978
Loc: US-WA
If not for tan 15k would be great. Agree that 10w30 would be much more linear and stand up to the service better. Maybe even the 15w30 are from Delo would be a good choice.
_________________________
95 Cherokee 190K DELO 10W30,XG8
07 IS250 97K FB ?w??,FULL
04 YZF-R1 19K DELO 15w40,XG7317
99 HD XL1200S 18K 76 20w50,1515
14 RX450h 30k PP 0w20,NAPAG

Top
#4439311 - 06/23/17 10:01 AM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: oil_film_movies]
zorobabel Offline


Registered: 01/27/11
Posts: 477
Loc: Anaheim, CA
Originally Posted By: oil_film_movies

Pistons WPD would be the big issue, not sludge.

What's WPD?
_________________________
1997 Maxima 175k, Delvac 15w40, Wix 51315
2004 Corolla 189k, VWB 5w20 + SSS 10w40, MGL4967

Top
#4439314 - 06/23/17 10:07 AM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: zorobabel]
oil_film_movies Offline


Registered: 06/13/16
Posts: 2548
Loc: MN
Originally Posted By: zorobabel
Originally Posted By: oil_film_movies

Pistons WPD would be the big issue, not sludge.

What's WPD?
How much gunk collects near the rings on the pistons. Hot torture for oil. http://www.swri.org/sites/default/files/sequence-iiig-test.pdf

Top
#4439326 - 06/23/17 10:19 AM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: oil_film_movies]
zorobabel Offline


Registered: 01/27/11
Posts: 477
Loc: Anaheim, CA
Originally Posted By: oil_film_movies
Originally Posted By: zorobabel
Originally Posted By: oil_film_movies

Pistons WPD would be the big issue, not sludge.

What's WPD?
How much gunk collects near the rings on the pistons. Hot torture for oil. http://www.swri.org/sites/default/files/sequence-iiig-test.pdf

Thanks!
_________________________
1997 Maxima 175k, Delvac 15w40, Wix 51315
2004 Corolla 189k, VWB 5w20 + SSS 10w40, MGL4967

Top
#4439329 - 06/23/17 10:24 AM Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow]
oliveoil Offline


Registered: 12/12/06
Posts: 417
Loc: snow and sun
Syn oil? Or regular ?

Top
Page 1 of 3 1 2 3 >