I just recently had a block heater installed by the dealer on my L3560HSTC and was wondering about using it. The dealer said to set a plug in timer for it and just set it to warm up before I will be using it. My neighbor has a Skidsteer and he said just plug it in and leave it that way until I need to use it then unplug it and go. I'm sure it will use less electricity on a timer, but will it burn out or hurt anything if I leave it plugged in during cold weather?