- Complete synthetic high-quality wear protection for critical engine parts
- Extra-strength protection against rust, corrosion, and varnish buildup
- Formulated to dissipate deposit and sludge formations for a cleaner engine
- Enhanced lubrication and flow for better cold weather performance
- High-temperature and oxidation resistance for increased service life
Selecting the best type of motor oil for your vehicle will help maintain its performance and extend the life of your engine. Synthetic oil is the best choice for most vehicles on the road today, however, conventional oil is still available as a budget-friendly oil change option for older vehicles. Not only do we have the best conventional and full synthetic oil available, we also carry high-mileage synthetic and high-mileage conventional oil that can help best maintain engines with over 75,000 miles and keep them running at peak performance for as long as possible.
SYNTEC® Powered by O’Reilly is a premium high-quality synthetic oil developed and specially formulated for today’s modern engines and all driving conditions.
SYNTEC® Full Synthetic High-Mileage Powered by O’Reilly is a premium high-quality synthetic oil developed and specially formulated for engines with over 75,000 miles.
- Complete synthetic high-quality wear protection for high-mileage engines
- Enhanced conditioning additives extend life of seals and O-rings
- Premium-quality base oil and viscosity modifiers for decreased oil burn-off
- Extra-strength protection against rust, corrosion, and varnish buildup
- Formulated to dissipate sludge and deposit formations for a cleaner engine
- Enhanced lubrication and flow for better cold weather performance
- High-temperature and oxidation resistance for increased service life
O’Reilly Full Synthetic motor oil provides synthetic quality anti-wear engine protection for all driving conditions and is formulated to offer extra protection against the harmful effects of city driving.
- Quality engine protection for all driving conditions
- Protects against rust, corrosion, and varnish buildup
- Provides enhanced anti-wear protection and reduces sludge formation
- Includes anti-friction additives to maintain or improve fuel efficiency
- Improves engine performance and helps reduce harmful deposits
O’Reilly Full Synthetic High-Mileage motor oil is specially blended with quality synthetic base oils and formulated with anti-wear and performance additives for higher-mileage vehicles.
- Formulated to extend the life of high-mileage engines
- Protects against rust, corrosion, and varnish buildup
- Provides enhanced anti-wear protection and reduces sludge formation
- Conditioning additives refresh seals and O-rings for improved leak protection
- Includes anti-friction additives to maintain or improve fuel efficiency
- Improves engine performance and helps reduce harmful deposits
O’Reilly Conventional motor oil provides conventional engine protection under all driving conditions and is formulated to minimize the harmful effects of city driving.
- Complete engine protection for all driving conditions
- Protects against rust, corrosion, startup wear, and varnish buildup
- Reduces deposits and sludge formation
- Resists thermal breakdown
- Low-friction formula can improve gas mileage and engine performance
O’Reilly High-Mileage conventional motor oil is specially formulated with select base stocks and performance-enhancing additives to provide extra engine protection for vehicles with over 75,000 miles.
- Complete engine protection for high-mileage vehicles
- Protects against rust, corrosion, startup wear, and varnish buildup
- Provides anti-wear protection and reduces deposits and sludge formation
- Resists thermal breakdown
- Includes seal conditioning additives for improved leak protection
- Low-friction formula can improve gas mileage and engine performance
