Quote:
Originally Posted by bluesubie
Actually, there are reports on this forum where thinner oil keeps temps down better than thicker oil in track conditions.
And there are also forced induction applications here running 0W-20. They're just using robust 20 grades like Amsoil Dominator 5W-20, Red Line 0W-20, and Motul 300V 0W-20.
Unfortunately, the numbers on the bottle (or even the brand) don't tell you much. Motul 300V 0W-20 is completely different from Motul 8100 0W-20. Likewise, Amsoil Dominator 5W-20 is completely different from Amsoil Signature 5W-20. Some robust xW-20 oils will give you similar oil pressure to some low High Temp High Shear xW-30 oils. And those xW-20's may do a better job of maintaining consistent oil pressure in extreme conditions over the oil change interval than the low HTHS 5W-30's.
-Dennis
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True story, it's hard to find that underlying information when companies don't initially post it for consumers to view. Those oils you have stated might have higher zinc and phosphorus levels too. But overall, track racing is a different style of driving verus daily driver (which you know). Oil is just too damn expensive these days :p