Fastrax Pure Silicone Diff Oil 1 Million cSt (1,000,000 cSt)

Fastrax Pure Silicone Diff Oil 1,000,000 cSt (1 million cSt) is a pure silicone differential fluid for radio control models. The ultra-high viscosity grade offers a very thick option for tuning drivetrain behaviour in applicable RC differentials.

Listed as Fastrax part FAST61-1M, this product provides silicone diff oil with a viscosity rating of 1,000,000 cSt, also referred to as differential fluid. Use wherever this grade is specified for your model’s setup, including maintenance and rebuilds that call for a heavy-weight oil.