Yeesh. All those words and not one answer.
Originally Posted by talest
Originally Posted by kschachn
Originally Posted by talest
If that is your criterion then you could make that case, yes. I would only add this, While you certainly have good logic there on what the oils say on a data sheet as to what comprises all that is in the oil, which again is what I was calling a chemical composition and will abandon and defer to you etc etc, I would only add that the unofficial feel of the oil in one's engine would be the final say in what ends up becoming truly better, on a case by case basis. This of course would be outside of the scope of either tests or percentage of PAO or things of that nature, about what the oil is made of. Every user would get to decide which oil they prefer, and for them which oil is better, as an ultimate experience and how it makes their car feel.
Shorter, many people say their engine feels smooth or smoother on Brand Y oil versus the previous Brand X oil when applied in their vehicle, of course we can likely assume one would put the oil that meets the specs of what they need in their vehicle. Perhaps being unscientific but then again, there it is. And again there is no way to know this.
to oil_film_movies post I would add only 4. How it feels in the car.
Oh no, that isn't my criteria at all, I thought that was yours. I was only going by what you mentioned that oil_film_movies said. But I see now that it isn't yours either, your criteria is based on how the car feels (unofficial feel to be exact). I'm not sure if I agree that "feel" is enough to tell me that many oils are better than Mobil 1, but if you say so I'll defer to you etc. etc. I'd rather find out what that chemical composition thing was about instead.
I guess I'm not good enough at the whole unofficial feel thing to tell if Supertech 5W-30 would be a better oil for my BMW and Sienna than Castrol 0W-40. Maybe I shouid find out how they feel about it?
The best I could reply to you would be, Try it out in your Sienna if you were inclined to do so, and you would know for certain. Your BMW maybe there is the lifter tick and maybe there is not. I assume you use Castrol in the BMW you have because Castrol makes the oil for BMW brand oil
https://www.e90post.com/forums/showthread.php?t=675411 . In that case, you may have the M60B30 V-8 and may have researched out that as the best oil. Some BMW enthusiasts even run Mobil1 High Mileage 5W-30 in it. Some prefer a 30-grade and some prefer a 40-grade, quick example
https://www.bimmerforums.com/forum/showthread.php?1236644-m60b30-oil-type-viscosity if LL-98 being needed on your engine. You are absolutely free to make your own determination if an oil is worth using or worth changing for another, If you are satisfied with any one particular oil then that is fine, no issues.
https://www.bobistheoilguy.com/foru...r-tick-in-m60b30-gc-to-blame#Post2535338
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To be honest my butt dyno couldn't tell the difference between the Castrol 0w30, Rotella 5w40 and M1 0w40. O'Reilly just ran the M1 on sale so I gave it a try but I'm not turning the miles right now to justify the cost. Unless there's a sale on somewhere when this change is up I'll probably go back to the Rotella because of the cost difference. The M60 doesn't seem to be nearly as picky about oil as other engines I've run. As long as you give it a sturdy oil like the three I've mentioned it will be fine.