Precision-engineered silicone fluids for RC differentials. From 2,000 cSt for free-flowing front diffs to 100,000 cSt for ultra-thick traction control. Pure silicone, heat-stable, and engineered for consistent power delivery under racing stress.
Your differential oil dictates how power transfers to the wheels. Too thin and you lose corner-exit traction. Too thick and the chassis feels locked, fighting your inputs. The right viscosity, consistently delivered, is the difference between podiums and frustration.
Rhodex Differential Oils cover the full racing spectrum in 14 precise increments. Each batch is engineered to the same tight cSt tolerance — so when you tune, you're tuning, not chasing variance from generic oils.
From light-flow front diffs to ultra-thick rear locking — every cSt point you need for professional setup.
Free-flowing diff oil for front differentials in 1/10 touring cars and competition setups.
Light differential fluid for free-rotating front diffs and high-grip surface tuning.
Common viscosity for front diffs in touring cars. Smooth power transfer with predictable corner entry.
Bridging viscosity between light and medium. Versatile for center diffs and balanced setups.
Standard center differential viscosity. Reliable choice for balanced 4WD power distribution.
Mid-range center diff oil. Slight tightening for higher-grip surfaces and corner-exit power.
Higher-grip center diff viscosity. Used by competitive drivers seeking on-power stability.
Standard rear diff viscosity for off-road buggies. Strong corner-exit traction.
Tighter rear diff for power tracks. More mechanical traction, less unwanted wheel spin.
Heavy rear differential fluid. Locked-feeling traction for high-power buggies on grip-rich tracks.
Heavy traction control fluid. Near-locked feel for short-course trucks and high-power applications.
Very heavy diff oil. Specialist viscosity for extreme-traction setups and locked-axle simulation.
Maximum viscosity in the range. Ultra-thick fluid for spool-like behavior and extreme traction needs.
A starting point for selecting the right viscosity. Track conditions, driving style, and chassis platform all influence the optimal choice.
| Diff Position | Typical Range | Use Case | Common Choice |
|---|---|---|---|
| Front Diff (4WD) | 2,000 – 7,500 cSt | Free corner entry, light steering response | 5,000 cSt |
| Center Diff (4WD) | 7,500 – 25,000 cSt | Power balance front/rear, on-power stability | 10,000 cSt |
| Rear Diff (4WD) | 10,000 – 30,000 cSt | Corner-exit traction, mechanical grip | 20,000 cSt |
| Single Diff (2WD) | 3,000 – 10,000 cSt | 2WD buggy traction tuning | 5,000 cSt |
| Locked-Like Setups | 50,000 – 100,000 cSt | Spool-equivalent behavior, extreme traction | 100,000 cSt |
Thicker oil = more locked behavior = more on-power traction but slower direction changes. Thinner oil = freer rotation = better corner entry but reduced power application. Tune for your track and driving style.