Quote:
Originally Posted by jakobnev
I wouldn't go thinner on the warm grade, only on the winter grade.
So for example i'd be willing to go from 10w-30 to 0w-30 but not from 0w-30 to 0w16.
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Generally speaking I feel the same. However some cars have multiple recommended oils which vary in the warm grade as well.
Take the S2000. Honda recommends either a 10w30 or 5w40 if the temperature goes below 0F / -20C.
The Acura TSX recommended 5w30 in 2004, or 10w30 if temperatures don't drop below 0F. The 2014 TSX has an extremely similar engine and calls for 0w20.