5. Reassemble in reverse order. Be sure to fill the shocks with 100% pure silicone shock oil to help prolong the life of the seals. From the factory, the GT-Maxx shocks are filled with 60W shock oil. When adding shock fluid, be sure to allow any air bubbles to escape.
From the factory, both the differentials are filled with SAE 50,000W viscosity silicone oil. Only use silicone oil in the differentials. Traxxas sells SAE 10,000W, SAE 30,000W, SAE 100,000W, and SAE 500,000W viscosity oil (see your parts list). The differentials have to be removed from the vehicle and disassembled to change/replace oil.