Cleaning oil to be used prior to changing all weather oil on Rohloff Speedhubs . Oil change kit (RH8410) includes: nipple-to-hub interface, filler tube, injection syringe, cleaning oil and all weather oil . RH8404/8409/8406 are lubricating and cleaning oil onlyItem Specifications: Type: Drip, Description: (1) All Weather, (1) Cleaning Oil For Speedhub, Size: (1) 12.5ml, (1) 25ml, Model Name: All Weather/Cleaning Oil, Package: Kit,