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Keep your engine running smoothly with Pennzoil's Conventional Engine Oil 10W-30, a top-quality lubricant designed for a wide range of vehicles on the road today. Formulated with our revolutionary Advanced Lubrication Technology, this 5-quart bottle offers outstanding performance for both daily driving and severe usage conditions, including protection against engine wear, corrosion, and foaming. Meeting American Petroleum Institute (API) standards for Gasoline Engines and Light-Duty Vehicles, it's perfect for both foreign and domestic vehicles, providing long-lasting protection while maintaining excellent performance in both cold and hot climates. So protect your engine with Pennzoil 10W-30 Conventional Engine Oil and experience the confidence of optimal vehicle performance, mile after mile.