Changing the car differential oil—it's one of the most-overlooked maintenance tasks on non-FWD light trucks, SUVs, and passenger cars. Because the differential is at the rear and under the car, it ...

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 ...

Driving with the diff lock engaged on dry pavement isn't just a bad habit. It's a quick way to strain your drivetrain and make the whole car feel off. The tighter the corner, the worse it gets. Your ...

There are many possible differentials to use in the rearend of your car. Before making your decision you should determine how you will use the car, how streetable you want it to be and how much you ...

DEAR CAR TALK: I just read your recent answer to David, about how to tow vehicles with automatic transmissions. It made me think about my parents' RV trips years ago, where they towed a '95 Jeep ...

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 ...