From ECS Tuning comes a very comprehensive kit for servicing your differential using Redline 75w90 performance gear oil. Everything down to the seal is included. Servicing your differential is important to extend it's life and to keep it operating as it should.
The kit includes:
For draining the fluid, you will need a transfer pump. ECS Tuning has an extensive selection of tools. If you need a transfer pump simply go to the drivetrain section under maintenance.