Recommended oil for a 352 (56 Super)

Posted by humanpotatohybrid On 2022/9/15 18:34:49

Hi,

Wondering what the best type of oil would be to put in a 352 V-8. The 1956 Clipper manual suggests using 10W-30.

Any recommendations on what brand of oil to use? Or weight?

The engine "had the heads redone, and new rings installed" like 10-15 years ago and within the last 20k miles.

It has an Oldsmobile oil pump if that makes a difference. Oil pressure is around 60-65 PSI at all speeds.

Edit: looking in the service manual it looks like the pressure should be 45-50 PSI. IDK how big of a problem it would be to have it higher, or if it could be caused by the oil being old. We put a fair amount of 15W40 in it just to top it off earlier too.