Overview
The Traxxas Differential Oil Kit (TRX5136X) is an essential maintenance and tuning product for RC car enthusiasts across the UK who want to optimise their vehicle's handling and performance. This carefully curated kit contains three different viscosity weights—10K, 30K, and 50K—each in 50cc bottles, giving you complete flexibility to dial in your differential's limited slip action precisely. Whether you're a competitive racer at your local RC track, a weekend basher enjoying off-road adventures, or someone exploring the world of RC cars for the first time, this differential oil kit is an invaluable addition to your maintenance arsenal.
Traxxas performance differential oils make it remarkably easy to increase or decrease the limited slip action of your gear differential by simply selecting the appropriate viscosity weight. The beauty of this kit lies in its versatility—different track conditions demand different differential characteristics, and having all three weights on hand means you're never caught unprepared. Whether you're racing on asphalt, dirt, carpet or any other surface, the ability to fine-tune your differential's behaviour can be the difference between victory and defeat, or simply enjoying smoother, more predictable handling from your RC car UK model.
Each oil weight can also be purchased separately if you find a particular viscosity becomes your go-to choice, but this complete kit offers outstanding value and ensures you have everything needed to experiment and discover what works best for your driving style and local conditions. From the moment you receive this kit, you'll have the tools to enhance your RC car's turning performance, achieve faster exit speeds through corners, and maintain consistent handling across varying terrain and weather conditions.
Key Features
- Three Viscosity Weights Included — This kit provides 10K, 30K, and 50K oils in a single package, eliminating the need to purchase each weight separately and offering comprehensive tuning options for every track condition and driving scenario you might encounter with your RC vehicle.
- Limited Slip Differential Tuning — By using higher or lower viscosity oils, you can precisely control the amount of limited slip action in your gear differential, directly affecting how your RC car turns and responds to steering input during cornering and recovery.
- Enhanced Turning Performance — The ability to adjust differential action through oil selection allows you to optimise your RC car's cornering speed and exit velocity from turns, potentially improving lap times and overall track performance in competitive racing situations.
- 50cc Bottles — Each weight comes in a 50cc bottle, providing ample quantity for multiple applications and adjustments without needing to reorder immediately, making this kit economical for regular maintenance.
- Easy Application — Traxxas performance oils are straightforward to apply and adjust, requiring no special tools or extensive mechanical knowledge, making them accessible to RC enthusiasts of all skill levels from complete beginners to experienced racers.
- Genuine Traxxas Products — As official Traxxas performance oils, these are engineered specifically for Traxxas differentials and compatible models, ensuring compatibility and optimal results across a wide range of ready to run RC vehicles.
- Track Condition Adaptability — Different surfaces and weather conditions require different differential characteristics, and this kit gives you the flexibility to adapt your setup quickly without purchasing multiple individual bottles.
Technical Performance
Traxxas performance differential oils represent the pinnacle of drivetrain lubrication engineering for RC cars. The differential is one of the most critical components in any RC car's drivetrain system, responsible for distributing power between the left and right wheels whilst allowing them to rotate at different speeds during cornering. The viscosity of the oil used in your differential directly impacts its limited slip characteristics—thicker oils increase friction and limit slip, while thinner oils allow more wheel slip. This fundamental principle means that selecting the correct oil weight for your specific track conditions, driving style, and vehicle setup can dramatically improve handling consistency and cornering speed. The three weights included in this kit—10K, 30K, and 50K—span the common range used in competitive RC racing and weekend bashing alike. The 10K oil provides the least limited slip action, offering maximum wheel slip and freedom of movement, which benefits vehicles running on low-grip surfaces or for drivers preferring loose, responsive handling. The 30K represents a middle ground, balancing slip and grip for versatile all-around performance. The 50K oil provides the most limited slip action with the highest friction, ideal for high-grip surfaces like carpet tracks or tight technical courses where traction is abundant and you want maximum cornering stability. Each 50cc bottle provides adequate quantity for multiple differential fills and adjustments, with typical RC car differentials holding only a few millilitres of oil, meaning a single kit will serve you through numerous tuning iterations and seasonal changes. The engineering quality of Traxxas performance oils ensures consistent viscosity characteristics across temperature ranges, reliable performance in both cold winter conditions and hot summer track days, and superior protection against wear and oxidation compared to generic alternatives.
What's in the Box
- Traxxas 10K Differential Oil (50cc bottle)
- Traxxas 30K Differential Oil (50cc bottle)
- Traxxas 50K Differential Oil (50cc bottle)
Compatible Models
This differential oil kit is compatible with a wide range of Traxxas vehicles, including the Traxxas Slash 4X4 BL-2S 1:10 4WD RTR Brushless Electric Short Course Truck (Fox edition and Green edition), and the Traxxas WideMaxx Monster Truck range (Rock N Roll, Green, and Red editions). However, these represent only a selection of compatible models—many other Traxxas vehicles feature compatible gear differentials. We recommend consulting your vehicle's manual or contacting our team at RC Model Shop to confirm compatibility with your specific model.
Frequently Asked Questions
- How much differential oil does my RC car need? — Most RC car differentials require only a small amount of oil—typically just a few millilitres—to function properly. The exact quantity depends on your specific model, but the 50cc bottles included in this kit will provide enough for many applications, adjustments, and seasonal changes before needing to reorder.
- What's the difference between 10K, 30K, and 50K oils? — These numbers represent viscosity ratings indicating how thick the oil is. 10K is the thinnest and provides minimal friction, allowing maximum wheel slip. 30K is medium viscosity for balanced performance. 50K is the thickest, providing maximum limited slip action and the most friction between the differential gears. Thicker oils reduce slip, thinner oils increase slip.
- How do I know which weight to use? — Start with the weight recommended in your vehicle's manual. Then experiment—if your car feels too loose and slippery in corners, try a heavier (thicker) oil. If it feels too tight and understeers, try a lighter (thinner) oil. Track conditions matter greatly: low-grip surfaces benefit from thinner oils, high-grip surfaces from thicker oils.
- Can I use this kit on any RC car? — This kit is specifically designed for Traxxas vehicles with gear differentials. Whilst it's compatible with many Traxxas models including the Slash 4X4 BL-2S and WideMaxx Monster Truck, not all RC vehicles use the same differential system. Always check your vehicle's compatibility before purchasing or consult our knowledgeable team.
- Will changing differential oil affect my RC car's performance? — Yes, absolutely. Differential oil viscosity directly impacts how your vehicle turns, handles weight transfer during cornering, and manages traction. The right oil weight for your conditions can improve lap times, handling consistency, and overall driving feel. This is why having multiple weights available is so valuable for competitive and recreational drivers alike.
- How often should I change or adjust my differential oil? — This depends on usage frequency and conditions. Competitive racers often adjust differential oil between rounds to suit track conditions. Weekend bashers might change it seasonally or when switching between track types. Always inspect your differential regularly and replace the oil if it becomes discoloured, contaminated, or begins to lose viscosity characteristics.
- Is this suitable for beginners? — Absolutely. Whilst differential tuning might seem technical, applying and changing differential oil is straightforward and requires no special tools or expertise. This kit is perfect for beginners wanting to start learning about drivetrain tuning and improving their understanding of how RC vehicles handle.
- Why buy a complete kit instead of individual bottles? — The kit offers significant value by providing all three essential weights in one purchase. This eliminates the need to buy three separate products, saves storage space, and ensures you're always prepared to adjust your differential regardless of track conditions. Individual weights can be purchased separately once you identify your preferred choice.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the Traxxas Differential Oil Kit (1 each: 10K, 30K, 50K weights) TRX5136X today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
