I recently installed the correct regulator on my propane tank. When
reinstalling the brass t-fitting to the regulator outlet I noticed a gob of
grease like material inside. I cleaned it out but I can't imagine where it
came from. Can these propane tanks be contaminated somehow? I am still having
the fridge go out occasionally even when sitting in the driveway and wonder
if this crud has something to do with it.

Ken Hunter
82 Westy 1.9D
84 Jetta 1.5D
89 Mitsubishi van