Does anybody else use a synthetic ATF as a general purpose / all purpose oil? I keep some in a 1oz needle tip bottle and use that for everything (well, not everything but more like anything). Works great for everything from a thread lube to door hinges. Even works great on knife pivots and I wouldn't hesitate to use in on firearms if its all I had. My choice is Mobil 1 as thats the synthetic I had left over when I started using it. Not sure how compatible it is with various plastics and rubbers but haven't had any unintended troubles yet either...