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History repeating itself? #4782105
06/09/18 10:36 AM
06/09/18 10:36 AM
Joined: Dec 2006
Posts: 18,847
Dallas,Tx USA
aquariuscsm Offline OP
aquariuscsm  Offline OP
Joined: Dec 2006
Posts: 18,847
Dallas,Tx USA
I remember years back when I first discovered BITOG back in 02-03 maybe (it was linked from 3si.org,a 3000GT/Stealth forum),everyone was recommending thicker grades (10W40,15W40,15W50,20W50,etc). Then the shift to thinner oils took over (0W20,5W20). Now thicker oils (5W/10W30-0W40) are again getting recommended for cars that spec 20wts.

Are people actually finding that thicker is protecting better? Or does thicker oil just "feel" better psychologically thinking it's protecting better?

I think I always used thicker oils because I grew up around the old schoolers using them. I've actually gone to thinner oils and favor the results.

Let the discussion begin laugh


1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Quaker State Ultimate Durability 5W20

Re: History repeating itself? [Re: aquariuscsm] #4782110
06/09/18 10:41 AM
06/09/18 10:41 AM
Joined: Sep 2004
Posts: 7,615
Marshfield , MA
andyd Offline
andyd  Offline
Joined: Sep 2004
Posts: 7,615
Marshfield , MA
I drove heaps for most of my life. Thick oil is better for worn engines with blowby and fuel dilution. Better protection in an over heat and general engine malaise. The 0W20 is scary to me.


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: History repeating itself? [Re: aquariuscsm] #4782117
06/09/18 10:49 AM
06/09/18 10:49 AM
Joined: Mar 2017
Posts: 5,788
...
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 5,788
...
I started with Havoline 30wt. and then 10w40 which was the standard way back when. That shifted to 5w30 and now 0w20. I haven’t had any problems with any of these grades.

The perception that 0w20 is scary or watery is just that. Today’s modern oils perform very well for the task they are assigned to.

Now, if I were to tow a lot, haul heavy loads, or do some serious backcountry four wheeling , then the circumstances have changed and I would take those into consideration when picking a oil.


2017 Mazda CX-5 GT.

Valvoline Modern Engine 0w20
Mobil 1 EP 108A
Re: History repeating itself? [Re: andyd] #4782126
06/09/18 10:54 AM
06/09/18 10:54 AM
Joined: Mar 2010
Posts: 654
NY
mx5miata Offline
mx5miata  Offline
Joined: Mar 2010
Posts: 654
NY
0w16 is very scary to me. shrug

sad when 3-in-1 oil has a higher viscosity

Last edited by mx5miata; 06/09/18 10:58 AM.

NAPA FULL SYNTHETIC 0w20 Partsplus oil filter
Wix air filter
Re: History repeating itself? [Re: aquariuscsm] #4782135
06/09/18 11:05 AM
06/09/18 11:05 AM
Joined: Aug 2016
Posts: 293
Alberta
carviewsonic Offline
carviewsonic  Offline
Joined: Aug 2016
Posts: 293
Alberta
I'm starting to form the opinion that the 'thin' grades favour fuel economy over wear. But I also believe that the differences in wear compared to 'thicker' grades are so slight that they wouldn't be noticed over the typical lifespan of an average vehicle. The rest of the vehicle wears out before the engine does anyway. The company I work for runs about 30 pickups, mix of 1/2 and 3/4 ton, and they all run 5w20. Some of them do a lot of heavy towing as well. We send on average 5/year of them to auction with around 300,000 to 350,000 kms. The engines are always running well, but the rest of the truck is pretty well shot.

Last edited by carviewsonic; 06/09/18 11:06 AM.

'18 Impala
'03 Park Avenue
'05 Park Avenue
'07 Honda Accord
'09 VStar 1300
Re: History repeating itself? [Re: aquariuscsm] #4782136
06/09/18 11:05 AM
06/09/18 11:05 AM
Joined: Oct 2014
Posts: 12,053
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 12,053
Idaho
Oil 101 and the fools quoted the idea as fact.


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: History repeating itself? [Re: aquariuscsm] #4782138
06/09/18 11:05 AM
06/09/18 11:05 AM
Joined: Mar 2017
Posts: 598
West Ma.
rollinpete Offline
rollinpete  Offline
Joined: Mar 2017
Posts: 598
West Ma.
Iv'e never owned a vehicle that recommended anything thinner than 5w30 so when and if I ever do it won't be easy putting in that xw20. eek


Pete.
97 Ford Expl.Sport 4.0 ohv 4wd 5spddrive185k miles
Last Change;
50/50 QSUD, QSHM. 5w30
Fram xg8a, Fram CA8141

Currently under the influence of oil shocked2

Re: History repeating itself? [Re: aquariuscsm] #4782147
06/09/18 11:10 AM
06/09/18 11:10 AM
Joined: Apr 2017
Posts: 1,200
San Rafael, CA
dogememe Online content
dogememe  Online Content
Joined: Apr 2017
Posts: 1,200
San Rafael, CA
Nothing wrong with 5w-30, even in high-mileage vehicles. None of my vehicles have notable leaks or consumption. I don't believe in 10w-40 or 20w-50 in any engine that's running fine with no mechanical issues, though they fly off the shelf at the parts store (many people put them in newer vehicles, it's nuts)

Last edited by dogememe; 06/09/18 11:12 AM.

2010 Ford Escape 2.5 ~90K Miles - Royal Purple 5W-30, Wix Filter, 7K OCI.
1995 Chevy Silverado 5.7 ~ 267K Miles - Unknown Oil, Just Purchased, 3K OCI.
Re: History repeating itself? [Re: aquariuscsm] #4782155
06/09/18 11:15 AM
06/09/18 11:15 AM
Joined: Dec 2006
Posts: 8,398
Illinois
mrsilv04 Offline
mrsilv04  Offline
Joined: Dec 2006
Posts: 8,398
Illinois
When 5w-30 was released, many thought it would never work, too thin, engines won't last, it'll be a disaster...

It wasn't.


2004 Silverado - on its 3rd Jasper engine in less than one year.
Re: History repeating itself? [Re: mrsilv04] #4782158
06/09/18 11:24 AM
06/09/18 11:24 AM
Joined: Mar 2017
Posts: 5,788
...
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 5,788
...
Originally Posted By: mrsilv04
When 5w-30 was released, many thought it would never work, too thin, engines won't last, it'll be a disaster...

It wasn't.




Those were my thoughts as well when I ran 5w30 for the first time. I got over 300k with two vehicles running that grade.


2017 Mazda CX-5 GT.

Valvoline Modern Engine 0w20
Mobil 1 EP 108A
Re: History repeating itself? [Re: aquariuscsm] #4782206
06/09/18 12:15 PM
06/09/18 12:15 PM
Joined: Apr 2018
Posts: 618
Canada
nap Offline
nap  Offline
Joined: Apr 2018
Posts: 618
Canada
As long as we conflate “adequate” with “optimal”, without even defining what “adequate” means in the context, all such discussions are doomed to fail.

Re: History repeating itself? [Re: andyd] #4782208
06/09/18 12:18 PM
06/09/18 12:18 PM
Joined: Mar 2015
Posts: 11,330
In the shop
53' Stude Offline
53' Stude  Offline
Joined: Mar 2015
Posts: 11,330
In the shop
Originally Posted By: andyd
I drove heaps for most of my life. Thick oil is better for worn engines with blowby and fuel dilution. Better protection in an over heat and general engine malaise. The 0W20 is scary to me.


I don't understand this. You are using 0w20 in 2 vehicles in your sig

I'm about to put HK 5w20 in my 9year old Camry :^)

Will engine blow? Not hardly

Last edited by car51; 06/09/18 12:18 PM.

09' Camry LE, 141,020 miles

PP 5w30 and TG 4967
Re: History repeating itself? [Re: aquariuscsm] #4782217
06/09/18 12:38 PM
06/09/18 12:38 PM
Joined: Dec 2005
Posts: 10,048
Upper Midwest
kschachn Online content
kschachn  Online Content
Joined: Dec 2005
Posts: 10,048
Upper Midwest
It's ridiculous we need to start another thick vs. thin thread. That's the history repeating itself here.

Why not throw in MMO or Group designation while you're at it?


1994 BMW 530i, 231K
1996 Honda Accord, 263K
1999 Toyota Sienna, 402K
2000 Toyota ECHO, 272K
Re: History repeating itself? [Re: kschachn] #4782219
06/09/18 12:41 PM
06/09/18 12:41 PM
Joined: Mar 2017
Posts: 5,788
...
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 5,788
...
Originally Posted By: kschachn
It's ridiculous we need to start another thick vs. thin thread. That's the history repeating itself here.

Why not throw in MMO or Group designation while you're at it?




Agree.


2017 Mazda CX-5 GT.

Valvoline Modern Engine 0w20
Mobil 1 EP 108A
Re: History repeating itself? [Re: aquariuscsm] #4782223
06/09/18 12:52 PM
06/09/18 12:52 PM
Joined: Aug 2003
Posts: 10,887
Buffalo, NY
JTK Offline
JTK  Offline
Joined: Aug 2003
Posts: 10,887
Buffalo, NY
Originally Posted By: aquariuscsm

Are people actually finding that thicker is protecting better? Or does thicker oil just "feel" better psychologically thinking it's protecting better?



For automotive use and the level of care a typical BITOGer gives their vehicles, I don't think going to a thicker viscosity range over OEM recommendation has any advantage other than making you feel better.

Heavy-duty use or for hot/heavy used outdoor power equipment, I do think thicker oils have their place.

Last edited by JTK; 06/09/18 12:53 PM.

2017 Ram 1500 4x4, 3.6L. 2016 Nissan Quest SV (Babe magnet IV)
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