Because they are CAFE appeasers.What I'm finding hard to understand is, in the owners manual it reads to use 0W20 oil if 0W16 is not available. Then, next OCI, switch back to 0W16. WHY? If 0W20 was okay for one OCI, why not continue to use it?
5w30 in a car spec for 0w16
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What I'm finding hard to understand is, in the owners manual it reads to use 0W20 oil if 0W16 is not available. Then, next OCI, switch back to 0W16. WHY? If 0W20 was okay for one OCI, why not continue to use it?
Because when that was written 0w16 was not as widely available as it is today. It’s a moot point now.
Oh yeah, I see it states that at the very beginning.
I would just stick with 0W20. Easier to find than 0W16.
Viscosity is the first line of defense against metal-to-metal contact between moving parts. There is a difference between film thickness (MOFT) and film strength.
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Because of CAFEWhat I'm finding hard to understand is, in the owners manual it reads to use 0W20 oil if 0W16 is not available. Then, next OCI, switch back to 0W16. WHY? If 0W20 was okay for one OCI, why not continue to use it?
manicrodder
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Agreed. I was only taking 16 vs 20.
You would be a CAFE appeaser too if you were facing heavy fines if not complying.
Would Castrol Magnatec oil play a significant role here?
In terms of what? Film strength is dependent on the AW/AF additives and how they prevent wear when parts rub on each other. Film thickness is dependent on viscosity, particularly HTHS viscosity, and is what keeps moving parts separated and from rubbing on each other.
Not sure if CAFE "fines" per se, just doesn't give credits which saves the company money ... so guess it could be looked at as an "indirect fine".
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Okay.
But, Castrol "CLAIMS" that "X amount" of engine wear occurs at startup. Are the additives and viscosity you stated ever present at startup? Isn't this why Castrol Magnatec was invented? Or, is it a highly fictional ploy on their behalf?
I'm still trying to see that force field it gives off around engines.
polar sticky molecules is just marketing
Yeah, like that force field around engines in their commercials.
Jackson_Slugger
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Theoretically, if a thicker layer of oil stays clinging to surfaces after the engine is shut down, then there should be a bit more protection during a start-up. Start-up wear would also depends somewhat on what kind of AW/AF layer has been built-up on the surfaces (the film strength of the oil) to help mitigate wear when there is more rubbing contact before full lubrication is established.Okay.
But, Castrol "CLAIMS" that "X amount" of engine wear occurs at startup. Are the additives and viscosity you stated ever present at startup? Isn't this why Castrol Magnatec was invented? Or, is it a highly fictional ploy on their behalf?
I'm still trying to see that force field it gives off around engines.
You forgot "Amsoil vs everything else"
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“Is Redline/Amsoil worth it?”
That's best left to the owner of the vehicle to decide.
There's plenty of good info on this board to help make that decision.If you have a stash of 5w30 I would use it without hesitation, if you don't then buy some 0w16 or 0w20 until the warranty runs out.
I'm using 5w40 in the camry that specs 0w20 and don't see any difference whatsoever, I also have 10w40 in my stash that I plan on using in the camry and 4runner at some point.
I'm using 5w40 in the camry that specs 0w20 and don't see any difference whatsoever, I also have 10w40 in my stash that I plan on using in the camry and 4runner at some point.
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