Motorcraft XO-5W50-QGT SAE 5W-50 Full Synthetic Motor Oil (1 qt.) Motorcraft® SAE 5W-50 Full Synthetic Motor OilTop-quality motor oil required for Ford GT and Ford Mustang Shelby GT-500™American Petroleum Institute (API) Service Category SMManufactured with high-viscosity index, premium-quality, synthetic base oils and performance additives that provide wear and oxidation protection under severe operating conditionsResistant to deposit formation, including supercharged and turbocharged applicationsProvides quick flow to engine parts during start-up and lubricates effectively over a wide temperature rangeCompatible with other synthetic and petroleum-based formulationsRecommended by Ford Motor CompanyAvailable in cases of 12 one-quart bottles