Putting vegetable oil in a car engine is a terrible idea and should never be done, or at least that's what some experts say.

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 ...

As someone who's driven classic cars daily for around 15 years, as well as working on and restoring such cars throughout my education, I take vintage automotive maintenance very seriously. Many of ...

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 ...