Search results

is a motor oil considered "high zinc"...?

I just bought a '53 Chevy 4400 1-1/2 ton flat-bed truck... for my climate, the original owner's manual specifies S.A.E. 20 for warm weather months and S.A.E. 20-W for winter weather. I've looked around for this stuff... it looks like they don't make it any more... what would be a good...