The Yamaha LVO Light Superior Valve Oil is based on a newly developed synthetic formula that is more consistent than mineral-based oil to provide superior performance in all playing environments. The LVO Light Oil is made up of even-sized molecules to allow the oil to evaporate smoothly, guaranteeing a longer life with extremely responsive action. The Light Superior Oil is designed for instruments with tight valve tolerances, such as custom and professional trumpets and is the same oil included with all Yamaha Professional and Artist Series Custom Instruments. The Yamaha LVO Light Superior Valve Oil is available in a 1.28 ounce plastic bottle.