I just got "Tecumseh Hermetic Service Handbook" couple days ago. Free for the askin'
"Oil and refrigerant can spray out of the compressor if one of the terminal pins is ejected from the hermetic terminal. This 'terminal venting' can occur as a result of a ground fault (aka short circuit) in the compressor. The oil and refrigerant spray from terminal venting can be ignited by electricity and produce flames that can lead to serious burns or death."
Page 3 has a pic of a hermetic terminal with a pin blown out, from a short.
Does this help/apply?
And, is the compressor missing any pins?
Seems that would tell you there was a short that your meter missed.