This 30cc bottle of Yokomo YOKCS15000 is a silicone-based super blend formulated for RC-scale gear differentials. It is provided as a ready-to-use fluid labeled #15000 for hobbyists who tune differential behaviour in on-road and off-road models.
The oil governs torque distribution through the gear differential: larger viscosity numbers mean a stronger locking tendency relative to lighter grades. Select #15000 when a more locked diff feel will aid corner exit traction and straight-line stability, noting that the complete drivetrain setup influences the final handling balance.
Installation is carried out by draining the existing fluid and refilling the differential cavity with the chosen volume for your unit. Inspect seals and o-rings during service and consult your chassis documentation for precise fill amounts and service recommendations.
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