The benefits of using different oil specifications vary depending on the vehicle. Individuals should refer to the owner's manual to find the recommended oil specification and viscosity for the vehicle. The types of oil are conventional, premium conventional, synthetic, synthetic-blend and high-mileage.
Viscosity is a fluid's resistance to flow and listed on motor oil as an alphanumerical value, such as 5W-20 or 5W-30. Owner's manuals often recommend two oil viscosity values for vehicles. Conventional oil is the cheapest type of oil that meets API and SAE standards. Premium conventional oil is the standard oil for newer vehicles. Full-synthetic oil is beneficial to high-tech engines that require superior performance, although it is more expensive than other types of oil. Synthetic-blend oil is recommended for vehicles with higher engine loads, such as pick-up trucks and SUVs. High-mileage oil is best suited for vehicles with high mileage, usually 75,000 or more.