5000cSt Silicone Differential Oil - Yokomo RP-085050A Racing Performer Ultra  [RP-085050A]

Yokomo RP-085050A Racing Performer Ultra diff oil #5000
Price:
AUD$17.54
Brand:
Yokomo
Model:
RP-085050A
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Overview and intended use

This silicone-based diff oil is tuned for RC gear differentials where repeatable, controlled diff action is required. The RP-085050A Racing Performer Ultra #5000 by Yokomo is positioned as a high-viscosity option to limit oil migration and stabilise differential behaviour over longer runs.

Its formulation takes into account heavy drivetrain loading and modern high-RPM electric setups, helping to retain a lubricating film under continuous stress. The manufacturer reports validation under intense competitive conditions to ensure consistent performance from start to finish.

In practical terms, choosing a #5000 grade increases resistance inside the diff and gives a firmer response; it is typically selected when a more locked differential action is desired. When swapping oils, clean the housing thoroughly and follow correct torque and shim assembly so the oil performs reliably.
Remark :
Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

Does the #5000 formula resist migration during long runs?

The higher viscosity of #5000 helps reduce internal migration compared with thinner grades, supporting more stable diff action over extended sessions, especially in high-heat environments.

Should I change other setup items when using a thicker diff oil?

Thicker diff oil can affect balance and traction, so consider complementary adjustments such as anti-roll bar settings, tyre choice, or ride height to achieve the desired handling characteristics.

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