ZDDP Plus Oil Additive 3 Pack - Synthetic Oils - Engine ...
Rated • 1 review • eastwood.com
After 70+ years, the EPA mandated that all oil domestic producers remove ZDDP (Zinc Dialkyl Dithio Phosphate) from all conventional and synthetic motor oil. If your engine was designed before 1989 the non-roller lifetrs require ZDDP to avoid premature deterioration. ZDDP also alters bearing and journal surface characteristics to prevent metal to metal contact. Under extreme conditions like a high performance motor, ZDDP reduces the tendency of parts to scuff or gall under heavy loads.