Quote:
Originally Posted by gravitylover
Sorry to ask for specifics now but, did your research give you data for Castrol Edge Extended? I've found my car to be happiest with this oil in the suggested 0W-20 weight, best mpg, easiest and quietest cold start and smoothest running on long road trips (which I do a lot of). This stuff https://www.castrol.com/en_us/united...motor-oil.html
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I looked at the Castrol Edge, not the Castrol Edge Extended. But I did look it up for you (all information is provided from manufacturers): 40C - 45.1 cSt & 100C - 8.7 cSt.
I've pretty much looked up every major brand oil manufacturer and 40C have averaged 45±1 cSt.