Castrol GTX High Mileage 5W-20 Synthetic Blend Motor Oil, 6-Pack

Castrol GTX High Mileage is a specially formulated motor oil that features unique detergency additives to prevent deposit build-up and seal conditioners to reduce leaks in engines with greater than 75,000 miles. Motor oil, which is made from crude oil, is used to lubricate, clean, and cool engines. There are various types of motor oil, including conventional, synthetic, diesel, bio-based, hybrid (blends of conventional and synthetic), and recycled oils. Motor oil varies in weight and viscosity, as well as the additives that some manufacturers incorporate during the refining process.

The Society of Automotive Engineers (SAE) has created a numerical code system that grades motor oils according to viscosity, with the higher the number between 0 and 60 indicating a more viscous (thicker) oil. Most consumer motor oils are graded by two numbers, with the first number indicating cold weather (Winter or "W") performance. This oil has a weight of SAE 5W-20, meaning it has an SAE viscosity rating of 5 in cold temperatures and a rating of 20 at normal operating temperature. It is important to always check your vehicle's owner's manual to verify that this is the correct weight of motor oil for your vehicle.

This oil is a conventional motor oil, meaning it is refined from crude oil or petroleum products. Conventional motor oils may or may not have additives included after refining. Conventional motor oils are more versatile than synthetic or hybrid motor oils, as they are suitable for use with nearly all types of modern vehicle engines, from cars and trucks to motorcycles, ATVs, farm equipment, and more.

This oil is primarily designed for use in high-mileage cars and trucks, including both older vehicles and new vehicles that see heavy long-distance use. Extra additives are included to minimize compression loss and to condition rubber seals and gaskets to prevent fluid leakage in older or high-mileage vehicles. The oil features superior detergency that helps prevent deposit build-up, superior oil burn-off protection compared to leading conventional oils, seal conditioners that help reduce leaks, and advanced additives that help prevent engine wear. This oil exceeds ILSAC GF-5 and API SN specifications.

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