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.

But what is not as well known is how dirty a car's fuel system can get over time. If you use low quality gas without extra fuel additives and detergents, your fuel system and injectors can get dirty.

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 ...

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 ...