It has been getting down to 0 F here in the past few days but still the tractor starts. I know the cold starts are hard on the engine though so I decided to plu it in last night when I got home late. Temp was about 4 F at the time and the coolant temp by the SGII was 165 F. I worked from home mush of the day today and by the time I powered up the emp had risen to about 18 F and the SGII showed the coolant at 79 F. So, it does keep it warm but certainly not hot.

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Dave

'06 CRD Limited, Lt. Khaki, MOPAR Slush Mats/Skids, DrawTite Front Hitch, Mag Lite, Yakima Bars, Thule Bike Rack, Fumoto, ORM, 245/70 Revo 2

Wish list: Lift, Boulder Bars, Something Bigger in the Front and Back, More Lights

It was 10 below here last night, yet with mine plugged in my coolant needle was well into the warm range immediately on start. Sorry, I dont have a scan tool so I cant tell you exact readings.