Premium Synthetic Blend. Manufactured with high-viscosity, premium-quality, synthetic/hydroprocessed base oils and specially formulated performance additives, Motorcraft Premium Synthetic Blend Motor Oil helps protect against high-temperature oxidation, low-temperature gelling, rust, corrosion, engine deposits and excessive wear.Improves Fuel Economy. The friction-reducing technology in Motorcraft's Premium Synthetic Blend Motor Oil provides superior wear protection and energy-conserving characteristics, which result in significant improvement in fuel economy when compared to other leading brands of motor oil.Meets Warranty Requirements. Motorcraft Premium Synthetic Blend Motor Oil is a premium-quality passenger car motor oil recommended by the Ford Motor Company to meet the warranty requirements of your vehicle. It is API Certified for gasoline engine service ILSAC GF-5 and meets API SN/Resource Conserving.Application. This Ford Motorcraft Oil is a 5w20 weight. Check your Mustang's oil cap or owner's manual for the correct weight for your engine.V6 needs 6 quarts for a complete oil change.V8 needs 7 quarts for a complete oil change.