Every engine requires oil to function, though oil itself has changed a lot over the decades. It's no longer a bad idea to use ...

When it comes to maintaining your car, few decisions are as important as the type of motor oil you use. Motor oil is the ...

Synthetic oil is a go-to choice for many vehicle owners, but does it improve fuel economy? If better mpg is your goal, here's ...

Synthetic oil used to be something only performance cars needed, but not anymore. Now it’s the manufacturer-recommended engine lubricant in many mainstream vehicles, such as the Subaru Forester ...

Semi-synthetic oil is a blend of mineral and synthetic oil. The ratio of the mixture typically ranges between 35/65 and 25/75 of mineral and synthetic oil respectively.

What’s the difference between road car and race car (like NASCAR) oil? Sponsored by Mobil 1 motor oil. Learn more about Mobil ...

Engine/Motor oil keeps your car running smoothly, but picking the right type can feel overwhelming. With mineral, semi-synthetic, and fully synthetic ...

Synthetic oil derives its characteristics from its refinement process. A fully synthetic oil uses no petroleum-based additives, instead deriving its manufacturing through alternative processes ...

Stretching your oil changes to 10,000 miles sounds great on paper. Fewer shop visits, less money spent, and a little extra ...

Modern synthetic oils last an incredibly long time. Thanks to all the detergents, additives, and other concoctions in them, these oils might be good for anywhere from 7,500 miles to 15,000 miles.

Synthetic oil would be beneficial in these engines because it helps to reduce sludge buildup, helping to extend the engine’s life span. CR’s Car Repair Shops Guide & Ratings.

Synthetic oil also performs better in extreme temperatures, hot and cold. When to Upgrade Your Oil “Normally, you should use the oil your owner’s manual recommends,” Ibbotson says.