Will_T
Well-Known Member
Not sure what is "normal" but sometimes my truck will preheat when the outside temp is 50 or 60. Other times it might be 48 and it will start immediately. Those examples are all first starts of the day.Is it normal for the truck to require a pre-heat when the ambient is between 40 - 50? Lately my truck, while parked inside, will have delayed start while the diesel heats and its nowhere near freezing.