I have one of those "jet" propane heaters. About 30 minutes and ready to go. In the 21 event (- F for a week), my only water was melted snow heated by wood fire for my cows. I needed the tractor bucket for the snow and to melt to water. They drank about 10 gallons a day, That is a lot of snow, No cows at present, but loaded wood to put on porch in case that is my only heat, BTW, cows love spent grain.Did you ever use the trashcan lid (metal) loaded with burning charcoal slipped under the engine to warm the oil (and everything else) so that you could get the engine to crank?![]()