Maxima Performance Auto Performance 10W40 Mineral Engine Oil - QuartMineral based automotive engine oil designed to ensure optimum protection and peak performance for race and hot rod engines. The extensively developed formulation utilizes a 2X Zinc system to ensure wear protection at any temperature. High quality base oils combine with an advanced, proprietary additive system to provide world class durability through effective ring seal, optimum engine cleanliness and resistance to separation caused by fuel dilution