This valve oil works as a standard oil. It does a good job at reducing friction between the valve and the valve casing. It is pretty thin so I recommend for piston valves on trumpet, valve trombone, or baritone. Blue juice is blue and has a anti-corrosion cleaning agent in it. For this reason, I don't like to use it all the time. I find after a while, it doesn't work as well because it does such a good job preserving the valve.
Steve the Brass Player
New York City