FPR040000 40K Diff Oil

Built for light tuning and smooth differential action, this silicone diff oil is designed to give more wheel differentiation compared to thicker fluids, making it ideal for loose or low-grip conditions. With a 40,000cst (40K) viscosity, it allows easier cornering and better rotation while still providing enough resistance to help control wheel spin under power. It’s commonly used in front or rear differentials on 1/10 and 1/8 scale RC vehicles where more steering or agility is desired. The 75ml bottle provides enough fluid for multiple rebuilds, making it a staple tuning option for fine drivetrain adjustments.

• 40,000cst viscosity for balanced but freer diff action
• Helps improve steering response and cornering rotation
• Reduces drivetrain binding on loose or bumpy surfaces
• Common tuning weight for front or rear differentials
• Silicone-based formula for consistent performance
• 75ml bottle for multiple diff rebuilds
• Suitable for 1/10 and 1/8 scale RC setups