- Jul 23, 2009
I have a 1998 Dodge 2500 4x4 with a 12 valve cummins. Usually I’ll run ashless ST 2 stroke oil at about 1/2-1 oz per gallon of diesel. Yesterday, I was at a farm and ranch store and they had Stanadyne Performance Formula in a 5 gallon pail marked down to $79 so I bought it. [censored], the 1/2 gallon was $30 so it seemed like a bargain Anybody use this stuff? Any recommendations? Use it by itself or with 2 stroke for added lubricity? Would using them together eliminate any of the advantages of either product?