You want to get the most out of your engine, and Quaker State motor oils are designed to help you do that, with advanced friction fighters for excellent protection and outstanding engine response.

Help keep your engine performing at its peak with Quaker State Peak Performance motor oil. Peak Performance helps protect against the harmful effects of friction, and it's backed by our 10-year/300,000-mile Lubrication Limited Warranty.

• Advanced friction protection
• Resistance to thermal breakdown
• Protection against harmful deposits 
• Helps control oxidation

Specially formulated for cars with over 75,000 miles, Quaker State Higher Mileage Engine with Slick 50 reconditions engine parts and gives your vehicle staying power, helping to keep it performing at its best.

• Reduces oil consumption caused by leaky seals
• Resists oil-related spark plug fouling
• Resists oil-related intake valve deposits
• Helps protect engine parts from wear and harmful deposits

Quaker State Universal HDX engine oils are high-quality motor oils for use in diesel and gasoline engines. Formulated with select base stocks and technologically advanced detergent, dispersant, anti-wear and anti-corrosion additives, Universal HDX multi-grade engine oils are designed primarily for use in today's high-output, high-performance heavy-duty diesel engines, especially those equipped with EGR (Exhaust Gas Recirculation).

• Formulated for mixed-fleet applications
• Provides excellent cold-cranking ability
• Helps minimize piston deposits
• Provides excellent control over bearing corrosion
• Helps reduce engine wear, helping to prolong engine life