With silicone oil 30.000 cSt, you can easily change the hardness / Shore (stiffness) and elasticity of pf very viscous silicone.
Hudy 106530 - HUDY ULTIMATE SILICONE OIL 30 000 cSt - 50ML - Genesis RC Raceway
Factory Team Associated Silicone Diff Fluid 30,000 cSt #5457 2 fl.oz. 59mL
Yeah Racing, Differential Oil Fluid Silicone Oil 30000cSt 59ml. rcMart Hobby Store ships worldwide.
Fluid Silicone Oil 30000cSt 59ml
Kyosho #300000 Silicone Oil, 40cc : Home & Kitchen
Core RC Silicone Oil - 30000cSt - 60ml
Made In Spain
XTR Ronnefalk Pure Silicone Diff Oil 30000 CST Edition V2 (100ML)
Mugen Seiki Silicone Differential Oil (50ml) (30,000cst) [MUGB0318A] - AMain Hobbies
Team Associated FT Silicone Diff Fluid 30.000cst, 9,99 €
Product - Latera Racing
Silicone Oil 1000 cSt - 56404