We earn commissions from purchases you make using links in our articles. Learn more. Most of the time, it’s unnecessary to give your vehicle’s differential cover a second thought; the technology has ...

A key part of getting a car's power to the ground effectively is the differential, which uses gearing to regulate the split of power between wheels on an axle. This video shows exactly how it works.

I have a 2007 Ford F-150 with the FX4 package, a little lift, and some larger-than-factory (28575R18) Toyo all-terrain tires. The truck has a ton of miles on it—nearly 200,000 miles—and I noticed the ...