There are different gasoline grades based on octane. Here's how to tell which grade of fuel your car needs and why.

In my nearly four decades of car ownership, I have driven a staggering variety of vehicles, from vintage Jeep CJ5s and CJ7s ...

My family has both a gasoline car and a diesel van, so sometimes, I accidentally drive up to the wrong pump. Luckily, I’ve always realized my mistake before reaching for the wrong nozzle, but I can ...