Quote Originally Posted by Motivation
I ONLY ran RP in my DSM. After I started parting it out, I took motor apart. The head and underneath of the valve cover look NEW. all the parts are clean. The car ran great with it, it didn't break down that fast. I will definitely use RP in my next car I build.
Breaking down and being discolored because of the detergents cleaning the engine are two different things. Dark oil doesn't mean it's lubricating properties are lost, it just means it's cleaning the engine. The filter is absorbing any contaminates that may damage an engine anyways...or they're stuck to the magnetic drain plug.