How do you fill differential for 2001 ford exsplorer sport trax?

To fill the differential on a 2001 Ford Explorer Sport Trac, start by locating the differential fill plug, typically found on the side of the differential housing. Remove the plug using a socket wrench, and then use a fluid pump or funnel to add the appropriate differential fluid until it reaches the fill hole. Ensure the fluid is at the correct level by checking that it slightly overflows when filled. Finally, replace the fill plug securely to prevent leaks.