As far as car fluids go, differential oil is one of the most neglected pieces of maintenance. It could be because the effects of not changing differential fluid on time aren't as immediately obvious ...

While it’s likely seldom done, some vehicles’ maintenance schedules do include an interval for changing the differential fluid, though perhaps only under “severe service” conditions such as frequent ...

What's the difference between AWD and 4WD? I was handed the keys to the brand new BMW M5, which can actually switch between 4WD and 2WD! Nothing all that impressive for any truck drivers out there, ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Changing the car differential oil—it's one of the most-overlooked maintenance tasks on non-FWD light ...

A Limited slip differential helps you drive effectively and safely. At times, one of the leading wheels might get stuck when driving on gravel or sand. But if you have the differential, you can keep ...

A locking differential, often referred to as a "locker," is a type of differential that enhances traction by ensuring both wheels on the same axle turn at the same speed, even when one has little or ...

If you’ve ever shopped for a sports car, you’ll often hear the term “limited-slip differential” (or LSD); you’re probably aware that it’s better than not having one, but it can be unclear exactly what ...

The electronic limited-slip differential (eLSD) is one of the greatest pieces of modern auto­motive magic. This wonderful contraption allows you to shift midcorner without lockup, helps you turn more ...