If you smell gas inside your car, don't just cover it up with air freshener. The issue may be serious, and there are things ...

Specifically, the gas cap seals your car or truck’s gas tank against escaping gasoline vapors. You know that clicking sound the gas cap makes when you turn it clockwise to close the tank?

This means those cars won't get the benefits of flex fuel. So if your car gas a black gas cap, always use the black pump ...