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#4782105 - 06/09/18 10:36 AM History repeating itself?
aquariuscsm Offline


Registered: 12/30/06
Posts: 18150
Loc: 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
Pennzoil Platinum 0W20



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#4782110 - 06/09/18 10:41 AM Re: History repeating itself? [Re: aquariuscsm]
andyd Online   content


Registered: 09/25/04
Posts: 7138
Loc: 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

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#4782117 - 06/09/18 10:49 AM Re: History repeating itself? [Re: aquariuscsm]
PimTac Online   content


Registered: 03/04/17
Posts: 4236
Loc: Soviet State of Washington
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.
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2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter


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#4782126 - 06/09/18 10:54 AM Re: History repeating itself? [Re: andyd]
mx5miata Offline


Registered: 03/28/10
Posts: 339
Loc: Ny
0w16 is very scary to me. shrug

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


Edited by mx5miata (06/09/18 10:58 AM)
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NAPA FULL SYNTHETIC 0w20 Partsplus oil filter
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#4782135 - 06/09/18 11:05 AM Re: History repeating itself? [Re: aquariuscsm]
carviewsonic Offline


Registered: 08/17/16
Posts: 217
Loc: 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.


Edited by carviewsonic (06/09/18 11:06 AM)
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#4782136 - 06/09/18 11:05 AM Re: History repeating itself? [Re: aquariuscsm]
CT8 Offline


Registered: 10/09/14
Posts: 10930
Loc: Idaho
Oil 101 and the fools quoted the idea as fact.
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"Don't let your preconceived notions get in the way of facts."
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#4782138 - 06/09/18 11:05 AM Re: History repeating itself? [Re: aquariuscsm]
rollinpete Offline


Registered: 03/20/17
Posts: 447
Loc: 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 5spddrive183k miles
Last Change;
Penn. Plat. HM 5w30
Fram xg8a, Fram CA8141

(Oil) Where would we be with out it.


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#4782147 - 06/09/18 11:10 AM Re: History repeating itself? [Re: aquariuscsm]
dogememe Offline


Registered: 04/15/17
Posts: 597
Loc: SF BAY AREA, 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)


Edited by dogememe (06/09/18 11:12 AM)
_________________________
2007 Ford Crown Vic P71 4.6 ~124K Miles, Valvoline SynPower 5W-30, Royal Purple Filter *Daily Driver*
2010 Ford Escape 2.5 ~70K Miles, Valvoline SynPower 5W-30, Wix Filter *Turo Rental Car*

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#4782155 - 06/09/18 11:15 AM Re: History repeating itself? [Re: aquariuscsm]
mrsilv04 Offline


Registered: 12/08/06
Posts: 8264
Loc: 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.
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2004 Silverado - on its 3rd Jasper engine in less than one year.

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#4782158 - 06/09/18 11:24 AM Re: History repeating itself? [Re: mrsilv04]
PimTac Online   content


Registered: 03/04/17
Posts: 4236
Loc: Soviet State of Washington
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 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter


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#4782206 - 06/09/18 12:15 PM Re: History repeating itself? [Re: aquariuscsm]
nap Offline


Registered: 04/27/18
Posts: 344
Loc: 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.

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#4782208 - 06/09/18 12:18 PM Re: History repeating itself? [Re: andyd]
car51 Online   content


Registered: 03/12/15
Posts: 10251
Loc: Southwest PA
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


Edited by car51 (06/09/18 12:18 PM)
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2009 Toyota Camry LE

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#4782217 - 06/09/18 12:38 PM Re: History repeating itself? [Re: aquariuscsm]
kschachn Online   content


Registered: 12/26/05
Posts: 9383
Loc: 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?
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1994 BMW 530i, 227K
1996 Honda Accord, 262K
1999 Toyota Sienna, 394K
2000 Toyota ECHO, 267K

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#4782219 - 06/09/18 12:41 PM Re: History repeating itself? [Re: kschachn]
PimTac Online   content


Registered: 03/04/17
Posts: 4236
Loc: Soviet State of Washington
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 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter


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#4782223 - 06/09/18 12:52 PM Re: History repeating itself? [Re: aquariuscsm]
JTK Offline


Registered: 08/14/03
Posts: 10559
Loc: 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.


Edited by JTK (06/09/18 12:53 PM)
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2017 Ram 1500 4x4, 3.6L. 2016 Nissan Quest SV (Babe magnet IV)

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