We use “Xeramic”, “Ceramic Synthetic Chain Spray”, and it is messy!! And we lub the chain EVERY time the kart comes off the track. Whether it’s a 5 minute practice or a 30 minute race- every time. If your chain starts to look dry, you’ve waited too long to add some lub. Oily and messy is fine, it helps your chain and gears live. We get the stuff from Russell Karting.