I have a 1953 truck with a 235 engine in my truck along with a 3 speed manual transmission. I've rebuilt the transmission and changed gasket, seals etc on the engine. Now I'm ready to put the oil back in.

Is it better to refill using synthetic oil in the engine and transmission?

Someone suggested synthetic oil may damage the brass found in the transmission. What about in the engine?

Last edited by DJRoy; 06/07/2013 3:35 PM.