When your valves feel fast and light, you’ll play at your best. So why not get the best out of the valves themselves with Yamaha YAC LVOX Light Synthetic Valve Oil? This lightweight synthetic valve oil delivers speedy playability that outlasts the competition. YAC LVOX valve oil is suitable for valves with tight clearances. You can also use it with equal success with both rotor and piston valves. Improve the performance of your valves with Yamaha YAC LVOX Light Synthetic Valve Oil.