Shock oil tuning explained

Want better handling from your Losi NASCAR? In this RC shock-oil tuning guide, we explain how changing shock-oil weight affects steering, traction, body roll, weight transfer, and overall control on the track. Shock oil is one of the most affordable and effective RC suspension adjustments, but thicker oil doesn’t automatically mean better handling. In this video, we break down the difference between thicker and thinner shock oil, explain how front and rear adjustments affect the car, and demonstrate how to properly service and refill an RC shock. Whether you’re racing on a road course, banked oval, smooth carpet, concrete, or rough asphalt, understanding shock damping can help you build a more predictable and consistent setup. 🔧 PRODUCTS AND TOOLS USED RC Shock Oil: https://amzn.to/4xBVOtL https://amzn.to/4h8gO5I https://amzn.to/4gMpihD RC Shock Stand/Building Tool: https://amzn.to/4ynxVq4 In this video, we cover: • What RC shock oil actually controls • Thicker versus thinner shock oil • How shock oil affects weight transfer • Front and rear suspension tuning • Signs your shock oil is too thick • Signs your shock oil is too thin • How to drain and refill an RC shock • Removing air bubbles from shock oil • Setting consistent shock rebound • Testing suspension changes at the track • Common RC shock-building mistakes • Why you should change only one setup variable at a time ⏱️ VIDEO CHAPTERS 0:00 – Introduction 0:55 – What shock oil controls 1:23 – Getting the suspension in sync 6:05 – When to use different oils 7:55 – Best Practices for new drivers 11:12 – Conclusion The spring determines how much force it takes to compress the suspension, while the shock oil controls how quickly the suspension moves. Thicker oil slows suspension movement and provides more platform control. Thinner oil allows the suspension to react faster and can help the tires follow rough or changing track surfaces. There is no single shock-oil weight that works perfectly everywhere. Track grip, surface condition, temperature, springs, shock pistons, tires, ride height, and driving style all affect the result. Start with a known baseline, make small adjustments, and compare consistent laps instead of judging the setup from one fast lap. What shock oil are you currently running, and what handling problem are you trying to correct? Leave your setup in the comments so we can compare notes and help each other get faster. If this video helped you understand RC suspension tuning, please hit the Like button, subscribe to Attack Moose RC, and follow along as we continue testing, tuning, and racing the Losi NASCAR platform. #RCShockTuning #LosiNASCAR #RCCarSetup