Quote:
Originally Posted by terboboost
Just because 275-300 is maybe ok doesn't mean it is ideal. Your oil WILL start breaking down at those temperatures. How about running that known-good synthetic 30- or 40- weight, with a simple air to oil cooler at 200-230 temps for maximum reliability?
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Oil doesn't necessarily breaks down at those temperatures. It depends on the oil, people have had good results in UOA after 5k miles and hitting 300 few times on M1 FS 0W-40. Sure I want maximum reliability but I don't think oil cooler means maximum reliability.