Not all spark plugs are created equal, and knowing which one your car needs can vastly improve your car's fuel economy.

If you ever want to start a heated group discussion in a group of auto gear-head DIYers, simply ask what’s the best spark plug to use? As many opinions and reasons will start flying, as if you asked ...

Spark plugs come in many different types, but they also have many different heat ranges. Here's what that means, as well as ...

Spark plugs are necessary for gas-powered engines. However, they're not all the same, and they can come in different shapes ...

A man changing the spark plug on a lawn mower - Fertnig/Getty Images If you own a gas-powered lawn mower, whether it is a compact push model or a giant zero-turn ride-on, there are a few key ...

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Add Yahoo as a preferred source to see more of our stories on Google. If you're like us, you've done a lot of thinking lately about the different shapes and lengths of spark plug tips. But odds are ...