Mapledawg
03-06-2013, 09:08 AM
Ran into an very old single piston pump that my grandfather had. It was used as an air compressor that came off an 1920's frigidaire. When I tested vacuum, I was getting a steady 28 hg! Hard to not give it a try (110 line taps), but would like to replace the oil. Anyone have a clue what I should use? It was very black and viscosity similar to motor oil. '7200