The rear differential, often called the rear end, does not have a dipstick tube to measure the level of oil. It is a closed unit that you must open up if you want to add gear oil. The process requires general tools and a 6-inch piece of rubber hose. The process should take you approximately 20 minutes to complete.
Park the vehicle on a level surface, and crawl under the rear end of the automobile.
Locate the differential plug on the top rear of the housing. The plug has a square hole in it that fits a three-eighths-inch ratchet driver.
Insert the ratchet driver into the square-receiving hole of the plug, and remove the plug with the ratchet.
Cut the tip of the lid off the rear end oil container using a razor blade. Shove the rubber hose onto the end lid of the oil container.
Sick the other end of the rubber hose into the hole on the differential housing.
Squeeze the bottle until oil seeps out of the housing. The plug hole acts as the fill-line, and oil seeping from the hole indicates the differential is full.
Thread the plug back into the differential housing using your fingers, and then tighten the plug using the socket.
