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

Winter is the time of year that really puts diesel trucks and tractors to the test. Sure, a boosted engine loves cold air, but you know what doesn’t? The fuel that makes these workhorses run. That’s ...

We may receive a commission on purchases made from links. Drivers trying to get the most performance out of their diesel trucks — and there are many things you can do — will sometimes resort to fuel ...

Amsoil's diesel All-in-One fuel additive combines the benefits of Amsoil Diesel Injector Clean, Diesel Cold Flow, and Diesel Cetane Boost in one package. According to the company, the additive ...

Over time and miles, your car might start to slow down. It might not accelerate as quickly as it once did; the engine may not run as smoothly as you remember, or the fuel economy may dip—but ...

Fuel additives are a staple of the auto parts store, but what is the difference between the fuel stabilizers and the fuel treatments on the shelves?