is there any way to buy refills for empty valve oil bottles, such as holton or al cass
I wouldn't bother with that. I would go to Woodwind/Brasswind, and get their brand of valve oil. Very economically sound, and a very good product. Why go to all the trouble of getting bulk stuff and trying to put it into those little bottles. Get the company brand stuff. It works wonderfully and is half the price. Sometimes you pay for the names al cass, or holton, when all you are getting is just oil.
Refills? okorder they are horrible!