Thanks Steve, that further reinforces the fact my oil has gotta go.

I have been able to source some SAE 30 locally for cheap, but it indicates it is for diesel engines. I am assuming that is the typical modern day use for straight 30, and it would be suitable for my bolt? But you know what they say about assuming...

James


1951 GMC 9430 long box w/ hoist
1952 GMC 9430 long box w/ hoist (sold)