I used Slick 50 in my Lil Mazda B2200 pick up (93) , It didn't seem to hurt anything, I can't really tell much difference.. Mazda has 65K miles on it now, still runs and drives good.
I use Penzoil full Synthetic oil 10W-30.....I added the Slick 50 at 15K miles....
Poison spider Evap.Skid/Master craft grab handles/Or-Fab spare tire-can carrier/ Gibson SS Duals/ Q-tec Floor Liners/Hidden Hitch Receiver, AntennaX 7inch, 48" Hi-Lift.
Viet Nam Veteran 69-70, Troop "D" (AIR) 3/4 Cav. ,25th Inf. Div. CUCHI RVN. UH-1H Crew Chief of the "Pinball Wizard" 68-16224. Call Sign "CENTAUR".