I ran my MarkI in the cold last winter in Anchorage without any problems. It hasn't gotten very cold here yet this winter so I don't know about the MarkII. Remember, its under warranty until at least next fall so don't worry about it.

Tom

Reg #2845: Mark 1 #00173, Mark 2 #119
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Reg #2845: Mark 1 #00173, Mark 2 #119, Mark 2a