Originally Posted by Barrygmc
I use Valvoline 50 or 60 weight racing motor oil. No sulfur and easy to find. 50 w motor oil has the same viscosity as 90 gl. I use the 60w in my summer only rigs.

Thanks Barrygmc, is this what you are referring to?

Name Racing SAE 50 Motor Oil
Size Quart
Part VV235
UPC 0-74130-00235-7

Name Racing SAE 60 Motor Oil
Size Quart
Part VV241
UPC 0-74130-00241-8

1952 GMC 9430 one ton pickup, a work in progress

1952 1-ton pictures on Photobucket