Originally Posted by cuztomimportz
I need to do this cocktail mix...seems like it will solve my slight grind into 4th gear. Doesn't happen all the time but its worth a shot I guess. I wonder if GrimmSpeed will sell the heavyweight redline instead of the lightweight. I'll have to call them.
I'm having the same issue. Is your grind under normal driving conditions? Mine grinds only when doing a 60mph pull in 3rd gear as I shift into 4th..