Under normal circumstances, most modern engine oil and gasoline brands work fine on their own to keep your engine running smoothly. But there may be cases where even the best of them could use a ...

Many of us try to eat right and have a well-balanced diet. We eat good foods and try to keep ourselves in good shape. Most of us benefit from taking vitamin supplements to boost certain areas of our ...

How well does vegetable oil work as a motor oil substitute? The difference in viscosity between these two oils reveals why ...

Walk into any parts store and you'll see the rows of glossy bottles promising to stop engine wear, boost fuel economy, and make your old clunker run like it just rolled out of the factory. The auto ...

Using the best engine oil additive can help improve the performance and longevity of your engine in a variety of ways. Most change the viscosity of the engine oil. Some also provide a coating of sorts ...

Q: I have a couple of friends: one swears by oil additives – especially the brand Lucas – and another claims an oil additive ruined his truck engine. What is your take on oil additives? A: Some oil ...

John Paul, AAA Northeast's Car Doctor, answers a question from a reader curious about using Marvel Mystery Oil. AP Photo/David Zalubowski ...

It doesn't matter if you have a hybrid or conventional gas-powered car, a good motor oil can make the difference between a long-lasting engine and a sputtery ride. Here's what you should look for when ...

Engine oil is a vital component of internal combustion engine vehicles. When the correct oil is used at the proper frequency, it keeps the car running smoothly while extending the life of the engine.