Lucas Oil Extreme Duty Marine Semi Synthetic 20W50 Engine Oil is designed for use in high performance boats requiring the ultimate protection and manufactured with the highest quality paraffinic base oils. Lucas Marine Semi Synthetic 20W50 is fortified with an exclusive additive package containing high levels of Zinc, Moly and Phosphorus that provides a tougher, thicker additive film for maximum protection even under the most severe conditions. It lowers oil temperatures, extends oil life and minimizes metal fatigue.

Lucas Marine Semi Synthetic 20W50 improves the film strength between the cylinder wall and piston rings and slows oil burning while improving pressure levels in worn engines. It has good cold temperature properties and stands up to high operating temperatures. This product is compatible with methanol and all racing fuels.

• Excellent for use with supercharged, turbo-charged or nitrous oxide high performance engines
• Protects against rust and moisture during long periods of storage
• Safely blends and is compatible with synthetic and non-synthetic oils