The break-in blend addresses issues regarding ring seal failure, extreme stress and exaggerated wear during initial start-up and break-in. The light viscosity oil contains pump-up additives, highly refined hydro-cracked base oils and an additive package with high shear stable polymer. Composed of high zinc content, the mix provides ring seal and overall engine protection during the break-in period. 5W-30 and 20W-50 weights are currently being offered by the quart and case, whereas PRO-15 comes by the gallon and 5-gallon pail.