Chevron Supreme Motor Oil 10W-30 1 Quart is a quality conventional motor oil that protects against harmful deposits sludge and contamination in automotive engine applications. Suitable for both new and high-mileage cars as well as turbocharged and naturally aspirated engines. Primarily for older engines that specify legacy API specifications. Also for use in lawnmowers forestry equipment construction snow blowers and other four-stroke engines that specify a single oil weight (SAE 30 and SAE 40). Excellent three-way catalyst protection. Reduces friction-related wear up to 25% better than GF-6 limit. Supreme Motor Oil is specifically formulated with quality base oils and cutting-edge additives