Open differential: In an open diff, you'll find two half shafts with a gear at each end. These gears are powered by the main ring gear, connected to the drive shaft via a pinion gear.

With rear-wheel-drive (RWD), the differential is between the rear wheels, connected to the transmission by a driveshaft. All-wheel-drive (AWD) and four-wheel-drive (4WD) vehicles add a centre ...

In this episode of Restore It, we continue the W123 restoration by removing the chrome trim and taking out the engine, gearbox, differential, and output shafts. With almost all necessary parts removed ...

Use the highest-quality gear oil you can afford to fill the differential. The weight and capacity will be listed in your owner's manual; your differential will usually hold as much as 3 quarts.

Learn how to repair a differential gearbox with expert techniques. This detailed guide covers the entire process, from diagnosing issues to restoring the gearbox to its optimal condition.

Differential fluid, also called gear oil, is the fluid that is poured into the rear differential housing. It needs to lubricate the clutches, gears, and bearings in the rear end.

Finally, another sound that you might hear is a “chattering.” This happens with the teeth on the gears of your rear differential break. Not only will you hear a chattering sound if this happens, but ...