Let’s explain all of those confusing numbers, letters and terms to help you choose the right oil for your car.

Motor oil comes in a variety of forms, designated by pairs of numbers, but the most common two are 10W-30 and 10W-40. What's ...

There's a lot of information on the packaging for your engine's motor oil, but the S designation may be one of the most ...

One way to do that is by using a low viscosity oil. The less energy an engine uses to lubricate itself, the less gas it uses in the process. There's also the fact that as engine technologies and ...

You might recall I pulled the cylinder head of the Jeep some two months ago to inspect the piston. In the end, I decided to ...

If you've ever examined the packaging on your engine oil, you may have noticed a letter C among all the other information.