When it comes to maintaining the health and longevity of your vehicle's engine, one of the most critical decisions you can make is selecting the appropriate engine oil grade. Engine oil acts as the ...

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?

The numbers and letters on a bottle of motor oil can look like gibberish if you aren't sure how to decode them. 5W-30, 10W-40, 0W-20... What's this supposed to be telling you? Does the "W" stand for ...

In North America, 15W-40 is the predominant viscosity grade for heavy-duty diesel engine oil. While other options exist, such as 5W-40 and 10W-30, many consumers are reluctant to change from the ...

Demands on heavy-duty diesel engine oils have changed alongside engine technology and fuel formulations. “As engine technology and fuel technology have evolved, the environment in the crankcase has ...

My car, a Saturn SL-1, burns oil. A lot. Part of it, from what I've read about this car, is just the way this model is. Part of it is a botched repair job with the head gasket. In any case, I have to ...