It's been pretty cold in my area, -10 to -20 at night for the past two weeks. My truck had to sit outside for most of that time when we were up north so I would plug it in at night. Well I see it's leaking radiator fluid from up front but only when it sits. When I'm driving it and it's warmed up and no leaks at all. Could that be the upper hose that everyone replaces with the updated one? Could it be the block heater did something? It's sitting in my garage where it's around 35 degrees now, -15 outside, and it's still leaking. Not a lot but little drops along the front. Any help would be great guys, Thanks........Also, I did order the updated hose last night just in case that's it.