Engine oil additives make all sorts of promises about helping your vehicle's motor last longer and increasing your gas mileage. Here's what you need to know.

Crude oil, the kind you might see bubbling up from the ground Jed Clampett-style, has been used for thousands of years. It's found employment doing everything from waterproofing for boats to burning ...

Summer heat does not just make you sweat. It also puts your car's vital fluids to the test. Engine oil and transmission fluid ...