Premium Valve Oil for Trumpet, Tuba, French Horn, Trombone, and Euphonium. Developed by real professional trumpet players.
Some folks like to oil their valves once a year and be done with it. We cannot condone such poor instrument maintenance habits. However, what we CAN recommend is Monster's "Smoother" oil--our heaviest oil formula appropriate for valves. Not only will you get the staying power that supports your lazier tendencies, you will get the smoothest action you've ever had from a valve oil. Have an older instrument with worn valves? This will make them behave nicely, and will help to seal the gap created between valve and casing due to your vast years of neglectful and abusive ownership practices. It's so smooth you will forget that your valves even exist. Look, just buy it.
Makes my "battle horn", my Bach CR310 cornet, sail! And really comforts my old, like me, Benge 5.