For most of my professional life I have been dedicated to the Al Cass “Fast” valve oil but today I may have become a convert to something different. Ultra Pure is really not a new valve oil but is new to me. While visiting our local music store today I tried to purchase my old friend Al Cass and was very disappointed to find that they did not carry that brand. Due to the fact that I was almost out of oil, I reluctantly paid the good man his token requested and I took it home. Upon arriving home to…