Oil is a crucial part of every internal combustion engine. Diesel and gasoline engines work differently, meaning diesel oil ...

High-mileage engines need more maintenance attention, but does that mean you should use thicker oil? Before adding any, ...

The best synthetic oils offer more mileage, keep the engine cleaner, perform equally well in low and high temperatures ... ILSAC engine oil licenses, along with the GM dexos1 gasoline engine ...

Liquids get thinner as they warm up, but does this happen to the oil inside a car engine? Here are the basics of motor oil ...

So, if the type and amount of ZDDP in a diesel oil is not ideal for a high-performance gasoline engine, is that the only reason not to use a diesel oil in a gasoline engine? Going back to engine ...

which decreases fuel economy. Oil companies’ use of additives is another approach to improving and maintaining oil performance. High engine temperatures combine with moisture, combustion ...

My mechanic recommended high-mileage motor oil and an original-equipment-quality oil filter, and the engine ran quieter, ...

You're on a long drive, and you decide to check your oil when you pull into a gas station. It's a little low. Is it a bad ...