Yokomo RP-UDL Ultra Diff Lube for Ball and Small Gear Diffs  [RP-UDL]

Stable damping formula for extended service life

This differential lubricant is built around a stable viscous silicone base to regulate traction and rotational smoothness in ball differentials and small gear diffs. The ingredient balance aims to keep damping consistent so setups retain predictable behavior across multiple runs.

In tuning, use the fluid to alter "feel": a heavier viscosity links the diff halves more tightly for increased feedback, while a lighter viscosity reduces resistance for freer spinning. Remember that this product is a tuning fluid and not a mechanical modification, letting you fine-tune differential reaction for competition or practice.

How to apply: add a controlled amount to the ball carriers and race surfaces inside the diff, cycle the mechanism to distribute the lube evenly, then reassemble. Avoid excess fluid because overfilling will shift the damping characteristics. This description treats the product purely as an RC accessory for small-scale differentials.

Maintenance benefit: the formulation is intended to limit rapid decline in performance so differentials can go longer between full disassembly and cleaning, compared with using thin oils.