I never wanted to mention it here but i see more and more people willing to use motor oil in there guns like I do. Motor oil has gone though massive amounts of research and testing under much worse conditions than a gun will normally see. Last winter my Keltech PF9 that I no longer own was struggling in the sub zero temps. I lubed it with royal purple 5-W20 oil and it ran like a champ. I have not shot anything much this winter but have been concerning motor oil more and more lately.
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