RC Differential Oil 50,000cSt 59ml - Arrowmax am-210028  [am-210028]

Control-Focused Silicone Differential Fluid

Arrowmax am-210028 is supplied as a 59ml bottle of silicone differential fluid for radio-controlled model diffs where a higher shear-resistant medium is desired. The 50,000 cSt grade delivers a measured, slow-flow characteristic that can help stabilise drive transfer and reduce diff slip during acceleration and cornering on scale models.

On a practical level, this fluid adjusts the speed at which a diff allows output differences. Using a heavier grade such as 50,000 cSt increases coupling between axle outputs, which can diminish inside-wheel spin on corner exit and modify overall handling balance. Combine diff choice with tyre, suspension and gear ratio changes for best results.

Basic service workflow:

• Drain the existing diff oil and thoroughly clean gears and bearings using an RC-appropriate cleaner.
• Inspect O-rings and diff components for wear or damage prior to reassembly.
• Introduce the desired amount of fluid into the diff housing, rotate the gears to distribute the oil, and then reassemble the unit.
• Allow a brief run-in and perform evaluation runs to assess handling changes, then refine viscosity to suit driving style and track conditions.

Notes on handling and storage: keep the bottle tightly capped and upright at room temperature, prevent contamination with dirt or other lubricants, and dispose of used fluid in line with local waste and hazardous material guidance.