The Muscle Car and Street Rod Engine Oils from COMP Cams are specifically designed to be used in engines that experience extended periods of storage. The oils utilize a blended synthetic formula fully approved for use in engines originally equipped with mineral oil. They provide all the benefits of mineral oil without the unwanted extras that lead to rust and corrosion. Designed for regular use, these oils will not create sludge, varnish or choke internal engine surfaces, and they are compatible with all gaskets and seals. The Muscle Car and Street Rod Engine Oils contain “corrosion fighting inch additives, detergents and optimum amounts of ZDDP (Zinc and Phosphorous) for anti-wear protection, even after long periods of storage. These heavily tested and dyno proven oils improve cold starts and protect internal engine components, particularly the camshaft and lifters, in both flat tappet and roller valve trains. The COMP Cams Muscle Car and Street Rod Engine Oils are fully-formulated and require no additives or supplements. In addition, both popular weights are fully compatible with gasoline and methanol.

Motor oil is made from crude oil and is used to lubricate, clean, and cool engines. Types of motor oil include conventional, synthetic, diesel, bio-based, hybrid (blends of conventional and synthetic), and recycled oils. Motor oil varies in weight and viscosity, as well as additives that some manufacturers add to the oil during the refining process. A numerical code system created by the Society of Automotive Engineers (SAE) grades motor oils according to viscosity--the higher the number between 0 and 60, the more viscous (thicker) the oil is. Most consumer motor oils are graded by two numbers, with the first number indicating cold weather (Winter or "W") performance.
SAE 15W-50This oil has a weight of SAE 15W-50, meaning it has an SAE viscosity rating of 15 in cold temperatures and a rating of 50 at normal operating temperature. Always check your vehicle's owner's manual to verify that this is the correct weight of motor oil for your vehicle.
Conventional Motor OilThis 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, because they are suitable for use with nearly all types of modern vehicle engines, from cars and trucks to motorcycles, ATVs, farm equipment, and more.