Now had you written "with NO additional engine wear" I would tend to disagree with you.
Will Thinner Oils Damage Your Engine?
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I suppose it is quantifiable in that the engine did not fail during the heavy duty use I have put it through. I haven't UOA'd the truck. Never really needed to. I've been out to the Rubicon trail in Cali and trails in CO as well. Locally, I haul my tractor and a lot of firewood. I have 10,000 lbs of dirt I need to unload for my wife right now. I believe the cooler maintains the oil temperature well and thus I've never worried about using 5W20 lubricants.
You're doing UOAs. You have a large sump. You run an oil cooler.
In short, your operating conditions are well out of the ordinary.
And as you accumulate miles, you may find your UOAs - our oil consumption - indicating it's time to move up a notch or two.
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You know what, I'm not going to play the game. I hope you have a very nice day.
I need to fire up the ol' tractor and unload 10,000 lbs of soil from my trailer that I hauled home with my Ford pumping 5W20.
If I see you next week, the mods have the weekend off. Take care man.
I need to fire up the ol' tractor and unload 10,000 lbs of soil from my trailer that I hauled home with my Ford pumping 5W20.
If I see you next week, the mods have the weekend off. Take care man.
In reality it’s a different word than “novice”. Same nonsense, same belligerent behavior (for no reason since the technical knowledge is lacking), just a different day and user name.
You're on the right track.
In order to say A-OK you either need two identical vehicles running parallel service with two different motor oils for a comparison, or you need to try different motor oils in your own vehicle use, and in either case you need UOAs.
Otherwise all you can say is "so far, so good".
Does it have an oil temperature gauge that reads out a number, not just "Low-Normal-High". But yes, a very effective oil cooler would certainly help engines keep that MOFT up that specify a thinner viscosity.
Yes, that is a cold rating, but that's what Valvoline calls it. It used to be called EXP140.
My friends old man would use it in his Olds powered Rail.
https://www.valvoline.com/our-products/pro-v-racing/sae-0w-oil
Didn't know you were referring to a race only oil used in non-street cars when referring to "0W" ... the context wasn't there either.
From Valvoline's Spec Sheet:
Valvoline™ Pro-V Racing™ EXP-140 is specially formulated with synthetic base stocks, unique friction modifiers, and light viscosity to yield maximum horsepower for qualifying. It is recommended for NHRA Pro Stock (V-8 and motorcycle engines), NASCAR V-8 restricted engines and 4-Cycle Kart and Junior dragsters. Viscosity is typical of SAE 0W.
"Qualifying" engines are typically sacrificial to some degree, and certainly aren't going to live a very long life without a rebuild. Any true racing engine doesn't live a long life.
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The engineering explainer shouldn't have ended that soon. Ended as if the grades would tell as much as we want to know. LS and Blackwing may require 0W-40 per instructions, at the same time these are boiling down into thickening 20s and 30s territory.
https://www.bobistheoilguy.com/forums/threads/2017-corvette-mobil-1-esp-0w40-7-1k-miles.324876/
He could have shown Alfa and Amsoil for GM and Mobil 1 to go on explaining:
Permanent viscosity loss should be half as interesting as temporary viscosity loss, but a bit of indication for the latter as well. And questioning any need for so much fight over this explaining guy's embottled grades at he same time. There's no longer enough to be had from simplistic grades, with modern freedom of recipes and engines making 20s from 40s within an OCI, right?
https://www.bobistheoilguy.com/forums/threads/2017-corvette-mobil-1-esp-0w40-7-1k-miles.324876/
He could have shown Alfa and Amsoil for GM and Mobil 1 to go on explaining:
Permanent viscosity loss should be half as interesting as temporary viscosity loss, but a bit of indication for the latter as well. And questioning any need for so much fight over this explaining guy's embottled grades at he same time. There's no longer enough to be had from simplistic grades, with modern freedom of recipes and engines making 20s from 40s within an OCI, right?
Just an example responding to Ed's comments.
Of course not. It's a high performance engine. No manufacturer that produces high performance engines recommend 0W20 in their engines.
My point is that high performance engines can use very thin oils. NHRA qualifying use thin oils too, and rebuilds are typically required because of the fuel they run, not the lubricant.
A new Silverado or Tahoe 6.2L spec 0W20. By all accounts, that's a high performance engine (420HP/460TQ). They don't blow up when you tow your trailer up a hill in summer.
Is there a analysis posted here that shows a 40 grade turned into a 20 grade?
I don’t remember that.
Shear down in viscosity also depends a lot on the engine design, sump capacity, use conditions, OCI, etc. I know the Coyote tends to shear oil pretty good with 8 cylinders, high revs (if driven that way) and miles of timing chains.
Out of context since pure racing engines were not stipulated in the comment. We were basically talking about high performance street cars (ie, "no manufacture" in the comment points to that), not full blown race cars. We all know full blow race cars don't relatively live a long life regardless of what oil is used.
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Who's to say the ECM is not programmed differently or they use a that different VCT (cam phaser) calibrated to that weight of oil?
What's that have to do with parts sliding past each other with a thin film of oil between them to keep them separated and wearing on each other? Nada.
Ford tests it's production vehicles in the hottest place on Earth and they survive on 5W20.
Then they are shipped to Australia.
Yes there are engines in the US that are overseas and is spec'd differently in other countries but who's to say the ECM is not programmed differently or they use a different VCT (cam phaser) calibrated to that viscosityof oil?
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