Spark plugs play a pivotal role in how your vehicle operates, but will upgrading to performance spark plugs increase horsepower? Here's what you need to know.

The Challenger 392 owner was quoted over $1,500 for a spark plug change on his Hemi V8 engine, but a quick search shows the ...

Replacing the Battery Most batteries last 30,000 to 50,000 miles and usually come with a three to five year prorated warranty. Check the battery cables (and battery fluid if your battery has removable ...