Chevron Havoline 10W-40 motor oil is a premium conventional motor oil with Deposit Shield Technology designed to protect against deposits, sludge and contamination in older engines. Specially formulated with advanced additives technology for continuous wear protection. Chevron Havoline Motor Oil is formulated with the latest base oil technology and cutting-edge additives to protect the engine under both normal and harsh driving conditions. Dramatically reduces engine wear and protects critical engine components. Special booster provides enhanced protection against wear and oxidation. It helps the oil retain its original viscosity longer.  Resists thermal breakdown, excellent three-way catalyst protection.