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In Reply to: Which weight oil 10-40 or 20-50 for hot summers..I posted by donpeak on July 21, 2001 at 20:42:17:
Synthetic is superior for some uses, but for most applications synthetic is a waste of money, IMHO. I'd rather use dino oil and drain out contaminants more often.
Bob
am confused that so many stores only carry 10-40 weights
and my manual says 20-50 is needed at temperatures over
90 degrees (F). and its hard to buy 20-50 in a lot of
brands.