I have a 2000 Ford Explorer Sport. I was getting an oil change and they SAID I needed to get new differential fluid, but I don’t know if I should trust this shady place. How often do I need to change the differential fluid, and is there any way to know other than time?

Do I need to replace the Differential Fluid?

mcparadise November 18, 2010, 7:14pm 3

I’ll bet the owner’s manual lists a time and a mileage interval for replacement of the differential fluid.

I’d trust the manual. Why are you having ANYTHING done at a shady place?