FWIW, MI-250 mounts (I have one) use the MP-50 lubricant.? Works great in all temps. ?Doesn't separate, harden or anything like that. In the almost 20 years I have had this mount, I regreased it once.? MP-50 just doesn't break down.
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According to the MP-50 label on my 1lb can (enough for a lifetime), it's temp range is -300 to +750.? That should cover every situation!
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I'm in MN and it gets cold here for months on end.? I don't use equipment when it gets below zero anymore but I used to.? Coldest temp was -30F.? Mount worked fine (I didn't but the mount did!).
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Chris N
Cedar, MN
