As the oil ages, its ability to protect against wear diminishes, regardless of the initial zinc concentration. This molecule serves a dual purpose: it functions as an antioxidant to prevent oil breakdown and, more notably, as an anti-wear agent.
High Zinc Motor Oil Modified Engine Choice and Performance Protection
Over time, the ZDDP molecules are depleted through thermal breakdown and chemical reaction with contaminants. High zinc motor oil represents a cornerstone of performance protection for modern engines, particularly those built with flat-tappet camshafts.
This specialized formulation contains elevated levels of zinc dialkyldithiophosphate (ZDDP), an anti-wear additive that creates a sacrificial layer between moving metal components. Consequently, the automotive industry moved toward low-zinc (low ZDDP) formulations to meet emissions standards.
High Zinc Motor Oil Modified Engine Choice for Enhanced Performance and Protection
Unlike roller followers, flat tappets rely on a sliding motion that generates significant sliding friction. Without adequate zinc levels, the base oil film can shear, causing the tappet face to gall or weld to the cam lobe.
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