| OK, here's my take on the situation ....
First, I should explain that I do some brass/metal work (I mostly do guitar work) --- I am not an expert. But, I have consulted "experts" regarding valve lubricants, and I have attended clinics and seminars put on by NAPBIRT ("Nat'l Association of Professional Band Instrument Repair Technicians"), where this very subject has come up. My wife is a graduate of Red Wing Technical College, where she studied band instrument repair, and, although she does not participate in this Forum (TrumpetMaster), I consult with her for guidance.
I would not use alcohol. Alcohol will strip-away any oil-film and the result is no lubricity.
I have in my hands, at this moment, a can of "Marvel's Mystery Oil" (it's a red & black small can, like "3-in-1" oil). We sometimes use it here in the shop, primarily as a substitute for "cracking oil" -- which is used to free stuck/frozen slides and valves. It probably would work for what you're looking for -- but -- if you can find it (I have some here in the shop), try "Marvel's Lubricating Oil" . The can says "for use on: electric motors, electric razors, firearms, machine tools, locks, musical instruments, phonographs, scientific instruments, surgical instruments, sewing machines, typewriters, etc., etc.".
Cautionary note: I have learned from the "experts" mentioned above, that petroleum-based valve-oils and lubricants will stain Monel pistons, and not necessarily "damage" them (pending further assessment). The "experts" have indicated that synthetic oils be used. I was surprised to learn "Mobil 1" fully synthetic automobile motor oil (light weight) was recommended (also, "Mobil 1 red" synthetic wheel-bearing grease for slides). I use "Mobil 1" fully synthetic motor oil in my vehichles, also. It's about $5 (US) per quart.
The hard-to-find 0W-40 "European Car Formula" is in my Diesel work van, and it started right away this morning at 7-degrees F -- I don't need to use the electric engine-block heater any longer since switching to this stuff. The container says "pourable at -65 degrees F (-54 degrees C).
Go ahead and try this ("Mobil 1"), especially the 0W-40 weight, if you can find it. I believe your problem will be solved.
Some "doubting Thomases" will be skeptical, I'm sure ... go ahead and "post" your thoughts. I was skeptical, also; but, it works.
Regards,
Robert Rowe |