Where do you add differential fluid to Acura Vigor?

To add differential fluid to an Acura Vigor, locate the differential housing, which is typically found on the rear of the vehicle. Remove the fill plug, usually located on the side of the differential, and use a suitable fluid pump to add the differential fluid until it reaches the proper level, just below the fill hole. Be sure to use the recommended fluid type specified in the owner's manual. Always check for leaks after refilling.