Royal Purple.....

[Wade_Owens]

Originally Posted by Rick Leininger Jr.

An engine shop I used to work for saved some of the used RP, after sitting a while a black film would form at the bottom of the jug, not sure if it is the same black paste you are referring to.

Rick, I have noticed the same thing when I saved some "light weight" RP also. A blackish-gray film formed in the bottom of the clear jug.

Wade