Quote:
Originally Posted by jphughan
I don't think there's a call for 0W-40 in Northern California climates even on our engine with its tight clearances. 0W is intended for subzero temperatures. But if you do feel the need, I would stick with Mobil 1.
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That is a fallacy that needs to die. There are literally zero reasons NOT to use a 0wXX oil almost everywhere in the world. 0wXX is not intended only for cold climates.
Even if it's 65 degrees at night where you live, the 0w will always be better at startup than a 5wXX or 10wXX.
Also remember that these cars are water-cooled and not air-cooled, so the other fallacy of "thicker is better for warm climates" needs to die too.