If you want to dial in your RC car's handling, the Tamiya 54988 - 300000 Silicon Differential Oil is made for sealed gear differentials and gives a noticeable improvement in steering control. Its formula is intended to stabilise the differential and sharpen turn-in on tight courses.
The 300000 viscosity rating works well in oil-filled gear diffs, delivering a firmer response when used in front differentials. That increased resistance helps produce more predictable steering and consistent handling even during aggressive driving or race events.
The 30cc bottle supplies enough oil for several refills or tuning sessions. Applying this high viscosity fluid can reduce wheel spin and help the drivetrain share power more evenly, improving traction and cornering balance.
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