After 70+ years of trouble-free, metal-metal anti-wear protection, the E.P.A. is forcing ZDDP
(Zinc Dialkyl Dithio Phosphate, containing both Zinc and Phosphorus) from domestic motor oil. If your engine was designed prior to 1996,
your cam and flat lifters require ZDDP in your motor oil to avoid premature deterioration.
Don’t sacrifice your cam and lifter protection, keep the proper ZDDP level your engine needs, by adding ZDDPlus™to your
motor oil at every oil change.