Virtually every road car is equipped with some sort of a differential and it’s vital to the way a car performs – without one negotiating a corner would be difficult. The differential’s main purpose is ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Changing the car differential oil—it's one of the most-overlooked maintenance tasks ...

While many car enthusiasts know how a differential works, very few actually know what it looks like inside your differential cover as you're driving down the road. Gale Banks, founder of diesel ...