Re: 1967 gmc
Quote:
Originally Posted by dbrown1992
What type of motor oil do you guys like in the 305?
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I run 15w-40 in mine year round. Seems to be fine. I think Straight 30 is the recommended oil though. Be sure to add some zinc in the oil to keep the cam from being wiped out. I plan to start running ZDDP.
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1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
1964 Chevy C20 292/SM420
1966 Chevy C10 292 hotrod 6/TKO600
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