It has problems in any cooler weather. The truck runs on the cooler side of things. I have a hotfox in the stock tank, but it is 17" and not really long enough. My switch is placed down in front of the front tank. I have a vormax heated filter housing and a layered plate heat exchanger. I was thinking of putting a fuel line in hose heat exchanger in front of the tank switch, a Veggie therm 12v heater before the the fuel line hits the filter bowl on the manifold, and or making a filter sleeve out of coolant hose. I also want to know if running grease that is not hot enough is going to hurt the motor. is so I just went almost 4k on it and is there any thing I can do the reverse any damage.