Mineral based engine oil specifically formulated for breaking in engines with flat tappet camshafts, roller elements and where maximum anti-wear performance is needed. High ZDDP formulation combines the highest quality mineral base stocks with a shear-stable polymer system to provide fast and effective ring seal. Advanced, proprietary additive system utilizes a complex, low-temperature activating 2X Zinc system that ensures immediate and lasting protection. Dyno proven to increase break-in efficiency.