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.

Many gas station brands get their fuel reviewed and tested by TOP TIER, a company endorsed by AAA, which rates fuel quality for gasoline and diesel engines. The brands that meet the company's ...

We may receive a commission on purchases made from links. Dirty fuel injectors can cause many problems, from minor annoyances like a rough idle or lower gas mileage, to more immediate and pressing ...