HELIOS 10W-40 API - SN SYNTHETIC BLEND PASSENGER CAR MOTOR OIL is a multi-grade parasynthetic lubricant designed for use in modern fuel injected gasoline engines. HELIOS 10W-40 API - SN SYNTHETIC BLEND PASSENGER CAR MOTOR OIL is formulated with synthetic and type II paraffinic base oils and a special additive package designed for superior protection against wear, corrosion, oxidation and varnish. Furthermore, a unique detergent additive prevents sludge or carbon deposits especially in extreme heat or pressure conditions. With superior anti-shear properties and high-viscosity index type II paraffinic and synthetic base stocks, HELIOS 10W-40 API - SN SYNTHETIC BLEND PASSENGER CAR MOTOR OIL enhances engine performance, extends oil life, eases cold-starts, and eliminates viscosity breakdown. These oils exceed the performance requirements of the American Petroleum's Institute's SN service category.