Pennzoil Platinum Full Synthetic 5W-30 Motor Oil is a premium engine oil made with natural gas using PurePlus gas-to-liquid technology, producing a base oil that is 99.5% pure with fewer impurities than crude oil-derived alternatives. This Costco value pack includes six individual 1-quart bottles, providing a convenient supply for oil changes on gasoline engines.

Pennzoil Platinum delivers complete engine protection including cleaner pistons (up to 50% cleaner than required by the toughest industry standards per Sequence IIIH testing), protected horsepower, and better fuel economy. It provides exceptional performance across extreme temperature ranges, flowing rapidly in cold temperatures down to -40°F and resisting oxidation and degradation in heat up to 400°F. The oil meets or exceeds API SP Resource Conserving, ILSAC GF-6A, ACEA A1/B1, and ACEA A5/B5 specifications.

Pennzoil backs this oil with a 15,000-mile protection guarantee and a 15-year/500,000-mile lubrication limited warranty when used exclusively with Pennzoil Platinum products (enrollment required; see pennzoil.com/warranty for full terms and conditions).