It has become the must-have inclusion for every serious four-wheel drive, but when and why do you need to use your differential lock?

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (iSeeCars) — To understand the benefits of a ...

(iSeeCars) — To understand the benefits of a limited-slip differential (often abbreviated to “LSD” in automotive literature) you have to understand the basic components involved in turning a car’s ...