The O, 5, and 10w are sort of irrelevant. They are all 30 weight oils when the motor is up to temp. I would think any of them would be a good choice. Personally I would go with the 0 or 5W.quote:
Originally posted by Stewart Fan:
My wifes S-10 Blazer has the 4.3,and I currently use 10-30 Chevron Supreme in it year round. At the next change (70K), I'm going to switch to M1. Should I stick with the 10-30,or go to the 5-30 or maybe even 0-30? I'll use the same weight year round because the temps in W. Wa. are pretty mild. If I use 10-30,I'll only have to keep one weight on hand because thats what I use in my truck. Thanks.