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

The French motor oil company Motul ... miles to over 300,000. Shell's Rotella line of synthetic oils is one of the most popular diesel oils. It's a clean and reliable full synthetic oil that ...

“As engine technology and fuel technology have evolved, the environment in the crankcase has changed,” says Stede Granger, Shell Lubricants ... an SAE 40 oil. That is a fully synthetic ...