About Ultra Pure ACC-UPO-VALVE-CR-30 Professional Valve Oil, 30ml (Small):
 
Our 1 ounce / 30ml size of Ultra-Pure Professional Valve Oil is a convenient small size you can put in every instrument case. Stock up and save!
 
We recommend that you oil your valves at least once a week.  Of course, the best results will be oiling each day since the oil will help wash down any contaminants.  A freshly oiled horn feels great! See our blog post on oiling valves for more info.