I tried many different methods when I was in Alaska, wandering back and forth across the Circle. ATF works fine down to somewhere around -12 F. After that, I generally ran dry or with a dusting of graphite. If you are going to go graphite, clean the action well and get it DRY. Warm the action with a hair dryer, apply the graphite and work the action until it is gone. Do it again. Do it again. Once the action is COLD up where you are hunting, don't bring it inside, again. The biggest problem I had was not sticky lube, but pieces and parts frozen together.