High Mileage Motor Oil for cars over 75,000 miles

High mileage motor oil is specially formulated for vehicles with more than 75,000 miles on the odometer. It contains seal conditioners to help prevent leaks, detergents to reduce deposits, and Phosphorous Replacement Technology to help protect the catalytic converter and emission system. 

Castrol offers three high mileage motor oils: Castrol EDGE High Mileage, an advanced full synthetic formula for drivers who demand maximum performance; Castrol GTX Full Synthetic High Mileage, a full synthetic for enhanced protection and affordability; and Castrol GTX High Mileage, a synthetic blend. All three oils are specially formulated for vehicles with more than 75,000 miles on the odometer. They are formulated to reduce burn-off and include seal conditioners to protect against leaks. It's Castrol's Phosphorous Replacement Technology that provides a unique benefit — a patented additive that reduces the level of harmful phosphorus, a known poison to the catalytic converter, helping to protect the emission system and extend the life of your car. 

The commonly adopted industry definition of 'High Mileage' is an engine that has more than 75,000 miles on the odometer — and most vehicles on the road today fit the high mileage profile. A High Mileage Motor Oil provides benefits focused specifically on the conditions that aging engines encounter. These specialized lubricants contain higher levels of detergents and seal conditioners to help protect aging seals and gaskets from becoming brittle, improved oil burn-off protection for engines where oil consumption has increased over time, and are completely suitable for newer engines too. 

Castrol EDGE High Mileage is an advanced full synthetic formula for drivers who demand maximum performance, with up to 15,000 miles between oil changes (0W grades; or one year, whichever comes first). Castrol GTX Full Synthetic High Mileage is a full synthetic formula that provides enhanced protection against extreme internal temperatures. Castrol GTX High Mileage is a synthetic blend that Includes specialized additives to reduce leaks, oil burn-off and power-robbing deposits. Use the Castrol Oil Selector to find the right grade for your vehicle. 

We always recommend following your vehicle manufacturer's recommendation for viscosity grade. Manufacturers will never call out 'High Mileage' within their oil recommendation — their recommendations are issued when the vehicle is new, not updated as the engine ages. A full synthetic oil that meets the manufacturer specification requirements can always be used in a high mileage vehicle. For the best of both worlds, select a full synthetic High Mileage Oil — such as Castrol EDGE High Mileage or Castrol GTX Full Synthetic High Mileage — which carries the performance advantages of full synthetic technology alongside the specialized additives of a high mileage formulation.

Yes. Castrol EDGE High Mileage, Castrol GTX Full Synthetic High Mileage, and Castrol GTX High Mileage are all available in 5W-30. Always follow your vehicle manufacturer's recommended viscosity grade. Use the Castrol Oil Selector to confirm the right oil for your car. 

Castrol offers three high mileage motor oils: Castrol EDGE High Mileage, an advanced full synthetic formula for drivers who demand maximum performance; Castrol GTX Full Synthetic High Mileage, a full synthetic for enhanced protection and affordability; and Castrol GTX High Mileage, a synthetic blend. All three oils are specially formulated for vehicles with more than 75,000 miles on the odometer. They are formulated to reduce burn-off and include seal conditioners to protect against leaks. It's Castrol's Phosphorous Replacement Technology that provides a unique benefit — a patented additive that reduces the level of harmful phosphorus, a known poison to the catalytic converter, helping to protect the emission system and extend the life of your car. 

The commonly adopted industry definition of 'High Mileage' is an engine that has more than 75,000 miles on the odometer — and most vehicles on the road today fit the high mileage profile. A High Mileage Motor Oil provides benefits focused specifically on the conditions that aging engines encounter. These specialized lubricants contain higher levels of detergents and seal conditioners to help protect aging seals and gaskets from becoming brittle, improved oil burn-off protection for engines where oil consumption has increased over time, and are completely suitable for newer engines too.