I have a new 2008 Dodge I just got a few months ago. 2500 Quad Cab with a Cummins Diesel. Was wondering if any of you have had any issues with the diesel gelling on these, and at what temperatures. In KY with the windchill, its in the negatives( Something we don't see very often) and am worried about diesel gel while driving around. Any additive you guys would recommend?