Q: How to replace the differential seal in a 1982 and later Toyota Supra?
A: To replace the differential seal in a vehicle, start by raising the rear of the vehicle and supporting it on jackstands. Drain the differential lubricant and separate the Axle Shaft from the differential. Use a long punch and hammer to drive the differential flange gear out, catching it as it comes out. If needed, use a puller to remove the flange. Pry the seal out of the differential with a screwdriver. Install the new seal by using a large socket or pipe and a hammer, applying grease to the seal's lip. Finally, reverse the removal steps to complete the installation.