Well, somebody apparently didn’t like an earlier post in which I mentioned a specific company, even though that’s been done many times before in many contexts. So, I’ll just try again with a short non-specific paragraph, and leave it at that, hoping it doesn’t disappear too.
With reference to earlier comments in previous posts above, lubes don’t have to be a problem in extreme cold, whether for engines or firearms. I’ve personally seen synthetic 80w90 gear lube stored at 0°F still easily pour out of its container. Pour points of engine oil are well below that. High quality synthetic lubes are easily available for both engines and firearms (and more). I’ve been using them in all our vehicles since 1978, and wouldn’t use anything else in them or on my firearms. Nor would my father-in-law before his death – and he treated his with the greatest of care.