second-hand vacuum pump, oil change question
A while ago I was lucky to find a vacuum pump on a flea market for 10 bucks.
It's a beauty for that price, and a quick test takes it down to 15 torr, but I did't dare to run it too long because the oil is really murky and needs
change.
I never have done this before, as up until now I've always use a refrigerator compressor as vacuum source.
Any tips on what oil to use and things to take in consideration?
sic transit gloria mundi
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