20,000cst Silicone Diff Fluid 59ml for 1/10 Scale - Arrowmax am-210025  [am-210025]

High-viscosity silicone for diff tuning

This Arrowmax am-210025 RC-scale accessory is a 59ml bottle of silicone differential fluid formulated at 20,000cst. It is designed to adjust internal damping in scale model differentials, changing torque transfer and transient handling across a range of surface conditions.

The fluid is provided as a direct fill for open and rebuildable sealed diffs used in hobby-grade RC cars and trucks. As a thicker silicone oil it slows the rate of torque transfer between wheels, creating a stronger locking tendency compared with lower-viscosity fluids. Apply it when increased diff damping is needed for steadier corner exit or to curb inside-wheel spin on low-traction surfaces.

When servicing a differential, drain the existing oil and refill to the level recommended by the differential maker for that design. Since this product targets diff internals rather than chassis, compatibility depends on your differential type and construction, so confirm internals before selecting viscosity. Keep the bottle upright and the cap sealed to avoid contamination.