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

High Detergent? High Definition? Howdy Doody? Just what, exactly, does it mean when the label on your vehicle's motor oil uses the initials HD?

Walmart's best selling motor oil happens to be the company's private label product. Made by Warren Distribution, a manufacturer that produces several other store-brand oils, expert analysis has ...

Motor oil covers everything in a thin ... Even if you don’t care about those things (and you should), the EPA labels oil dumping a criminal discharge of a hazardous substance.