If you live in a colder climate with many days with winter temperatures, you know how important the block heater is. Without those, you would have a rough time starting your diesel engine. If they are not working properly, you may even be stuck in the garage or a parking spot. But how hot does a block heater get? What are the minimum temperatures needed to start your engine? The block heater will raise the temperature to around 140° F, but you need to let it work to get to the operating temp...
