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Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: Virtus_Probi] #4382242 04/18/17 07:34 AM
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Shannow Offline
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Originally Posted By: Virtus_Probi
Did you not note my End Of Discussion post...hmmmm???
;^)


Sorry, was not familiar with that TLA... sick

Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: Shannow] #4382252 04/18/17 07:44 AM
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Virtus_Probi Offline
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Originally Posted By: Shannow
Originally Posted By: Virtus_Probi
Did you not note my End Of Discussion post...hmmmm???
;^)


Sorry, was not familiar with that TLA... sick



I had to look that one up and now I feel dumb...
:^(


2014 Forester XT, 105000 miles
Last Change;
PP 5w30 d1G2
Tokyo Roki 15208AA170 filter
Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: 4WD] #4382268 04/18/17 08:00 AM
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tig1 Offline
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Originally Posted By: 4WD
And there were 20's ...



I used M1 5-20 in an engine calling for 10-40 in 1978. Engine started much better in cold temps and ran smoother as well in all temps.


2007 Ford Fusion 248,000 miles
M1 5-20HM
2017 Ford Fusion 79K
M1 0-20EP
10,000 mile OCIs on both engines
M1 ATF and Valvoline LV
M1 10-30 in all OPE
MC filters

Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: tig1] #4382280 04/18/17 08:09 AM
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Shannow Offline
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Originally Posted By: tig1
I used M1 5-20 in an engine calling for 10-40 in 1978. Engine started much better in cold temps and ran smoother as well in all temps.


AND we've been over (and over) that the M1 5W20 was VII free, all basestock, and was more like Redline 5W20 n reality, with it's 2.9HTHS (which some would call "really a 30, including Dr Haas and CATERHAM, in spite of what J300 states)...and that was in an Era when 10W40 had no HTHS minimum, and may of them were woefuly inadequate....which lead to some OEMs decrying 10W40, and denying warranty should such oil be used.

Industry then started investigating "apparent" viscosity in high shear, and assigned 0W, 5W, and 10W 40s the same HTHS minimum of 2.9 as they assigned the 30s...that's how "good" the 10W40s were back then.

And so, when Mobil stated that their 5W20 monograde (no VIIs) gave the same protection as a 10W40, they weren't telling fibs...but they aren't (and we've been over this more than a dozen times) the same measures...and TGMO has nearly nothing to do with M1 5W20 the way it was originally made, in any way that you cut it....

Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: Gokhan] #4382297 04/18/17 08:26 AM
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Kuato Offline
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Interesting results, and I agree more testing is needed. I am currently performing a thick vs thin test of my own; it will be awhile before it is finished but I'll try to remember to post here when I have the results.


Thick vs Thin test: 15k / 43k miles complete
Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: Gokhan] #4382329 04/18/17 09:04 AM
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KCJeep Offline
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Tig has about 3 posts over and over again don't even bother.

Gokhan, great information and very interesting post. Thank you for taking the time to do so. I personally don't think you have the data to make the conclusions you did, but I am not going to sit here and throw internet rocks either.

It would have been nice to have seen the exact same oil brand and formulations compared against each other except in different weights.


2018 VW Passat GT VR6 - 17k - Castrol Pro OE 5w40 - VW OEM filter
2012 KIA Sedona 103k - Valvoline Maxlife 5w30
2012 VW Tiguan 102k - Castrol 0w40
2004 Jeep Grand Cherokee, gone but not forgotten.
Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: Gokhan] #4382331 04/18/17 09:05 AM
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ARCOgraphite Offline
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Not thick or thin but the right viscosity.

Didn't anyone learn anything from "Goldilocks and the Three Bears"

Engines want what THEY want, not what YOU want them to have smile


2019 VW Jetta S 6MT OCI#1 5885mi-Castrol Edge Prof? VW508+VW Service Filter; '17 Subaru Crosstrek CVT OC#7 52665mi-Castrol GTX Magnatec 5W20 + SOA Filter
Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: Gokhan] #4382350 04/18/17 09:19 AM
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pbm Offline
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When in doubt...why not split the difference and run a thin 5w30 like Havoline syn. or even PP.....that's what I would do....in fact, that's what I do on my 2008 Corolla with the 1ZZFE.


'Journalism is Dead'
Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: Gokhan] #4382364 04/18/17 09:36 AM
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robertcope Offline
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Final Verdict! LOL. C'mon, this isn't enough samples to begin to begin to draw conclusions from.

Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: Gokhan] #4382376 04/18/17 09:50 AM
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PimTac Offline
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Just like thick or thin crust pizza, there will never be agreement. In my opinion, both have their advantages depending on the application.


2017 Mazda CX5
Havoline Pro DS 0w20
Roki OEM filter.
Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: Gokhan] #4382391 04/18/17 10:12 AM
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HKPolice Offline
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These results make a lot of sense because you only drove 5K miles over 2 years which means mostly short trips?

If you were racing or have a lead foot, the 5w40's wear numbers would probably be the same as 0w20 or slightly better.

Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: Gokhan] #4382437 04/18/17 10:58 AM
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FlyPenFly Offline
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The differences seem to be within the margin of error.


2014 Mercedes GLK350 3.5L DFI
2014 Mercedes E350 Coupe 3.5L DFI
2010 Audi A4 2.0T
Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: Gokhan] #4382455 04/18/17 11:21 AM
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harryberry Offline
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Awesome! Very interesting!

Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: FlyPenFly] #4382457 04/18/17 11:25 AM
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doyall Offline
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Originally Posted By: FlyPenFly
The differences seem to be within the margin of error.


Why let statistical mumbojumbo get in the way?

Re: Thin or thick (TGMO 0W-20/M1 0W-40): Final verdict [Re: 4WD] #4382459 04/18/17 11:27 AM
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Originally Posted By: 4WD
And there were 20's ...



Yup. But the conventional 5W-20's formulated with Group I were awful...

And the reason why 5W-30 was often not recommended in the 80's or not recommended with the caveat about "high speed" highway usage was the same reason, the poor quality of the era's Group I base oils...

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