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 ...

Vehicles, like every other mechanical body of work that has ever been put together, require regular maintenance to stay in optimal shape. The magic is in the boring details; Routine procedures like ...

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

Oil is, as we all know, drilled from the ground, but it turns out the oil in your car is a little bit more complicated than ...

Marvel Mystery Oil, or MMO, — to the uninitiated, it may sound like a magical substance concocted from secret ingredients, and in some ways, that's exactly what it is. However, others may see it as ...

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.

If you own a diesel car, you'd probably know that getting its oil changed isn't as quick or affordable as getting the oil changed on your friend's gasoline car or the one you've owned before. It is a ...