High-Viscosity Silicone Differential Oil #15000 - Yokomo RP-08515KA  [RP-08515KA]

Yokomo RP-08515KA Racing Performer Ultra diff oil #15000
Price:
£9.32
Brand:
Yokomo
Model:
RP-08515KA
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Silicone differential oil characteristics

The Yokomo RP-08515KA Racing Performer Ultra diff oil #15000 is formulated as a silicone-based option for gear-type differentials in electric RC vehicles and related scale models, supplying steady damping and lubrication under heavier load conditions.

With high-output motors and performance batteries applying more force to drivetrains, this oil's thickness helps maintain an effective oil film and cuts down on oil migration, keeping diff response consistent lap after lap.

Installation follows common practice: empty the old fluid, clean and inspect the internals, then refill according to the diff case directions. Note that #15000 increases locked behaviour in comparison to lighter grades, so adjust suspension and tyre setup to compensate for the altered handling balance.
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.

Can this oil be mixed with lighter grades?

Mixing is possible but will yield intermediate characteristics; for predictable results, use a single known grade or carefully measure blends and test on-track to confirm handling effects.

What on-track signs indicate I need #15000?

Look for inconsistent diff behaviour, mid-run handling drift, or excessive inside-wheel spin; if these appear under high power, a heavier oil like #15000 can stabilise traction.

Should I change driving style with this viscosity?

Yes, expect a firmer lock that alters corner entry and rotation; smoother inputs and adjusted throttle application will help exploit the increased coupling for faster, more controlled exits.

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