Posted by MG on September 24, 2000 at 19:36:56:
I have a Miraphone 186 BBb with 5 rotary valves. I play it anywhere from two to four
hours each day, and I haven't oiled the valves for at least a month because they
move just as well as they did immediately after the last time I oiled them. Is it
OK to wait until they start sticking, or should they be oiled regularly no matter how
they are working?