Please, always stick with the same oil as was in the system. Yes, you can probably get away with it if you flush the system with copious quantities of dry propane, but do you really want to run the risk? Just buy some POE at the auto store and keep your compressor safe from acid.
Propane danger is inversely proportional to the stupidity of the user. With normal precautions taken (like not smoking while filling the system, not using an oxy-acetylene torch to test the heat moving capacity of a finished system, etc...) the 2-6 ounces of propane is not very dangerous. Your standard oxy-acetelene torch is more dangerous. Sure, an accident could happen, but it would take a wild set of rare events to occur in synchronization for anything to blow up. You could get hit by a lightning too (or win the lottery, which is 10-100 times less likely!).
Hydrogen18, it sounds like you know more than it sounded like in your other thread. Good luck with the system!
|