stp engine flush - mav
has anyone any thoughts on this product i am about to do a oil change. i think i may have a sticking tappet and wondered if this may help
thanks rob
stp engine flush - Honestjohn
What have you got? If it's a Ford CVH clogged to the crankshaft breather with black slime then the engine flush added to the old oil should help get rid of some of it.

HJ