In the automotive world, especially when it comes to off-road trucks and SUVs, differentials come up all the time. Is your differential locking, limited slip or open? Do you have a transfer case? One ...

If you’ve ever played with a Hot Wheels car, and of course you have, you know the toy does a great job of going in a straight line but doesn’t turn very well. That’s because it doesn’t have a ...

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 ...