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Old January 22, 2013, 08:39 AM   #4
Brian Pfleuger
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Join Date: June 25, 2008
Location: Western Colorado, finally.
Posts: 19,118
I'd be surprised if 20 was cold enough to have an effect. In that Chuck Hawks article he's talking about "below zero", "extreme cold", "arctic conditions" and mentions -50F. 20dg is not all that cold.

What kind and how much oil do you use and is it different oil than you've used previously under similar conditions?
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