Fuel injector cleaners are additives that are poured right into the gas tank and remove carbon deposits and other contaminants from the injectors. This can lead to better fuel economy, improved ...

If you thought diesel fuel additives were merely store-bought products at your favorite auto store, you'd better think again. Fuel suppliers, refineries, and manufacturers are the biggest market for ...

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 ...

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

If you use low-quality gas without extra fuel additives and detergents, your fuel system and injectors will get dirty. Here’s how they work.

Hydrocarbon deposits on injector nozzles and internal surfaces (far right) can impede their function and performance. Corrosion inhibitors, detergent additives, and lubricity agents can help alleviate ...

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 ...