Back in 2004, several automakers got together to create a more pure form of gasoline to meet strict standards set by the U.S. Environmental Protection Agency (EPA), now known as Top Tier gasoline.

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.

Proper maintenance of your car’s fuel cap and flap is not just about keeping your vehicle looking its best. It’s also about preventing fuel contamination, ensuring vehicle security, and maintaining ...