How cold does it have to be before you plug in a diesel?
How cold does it have to be before you plug in a diesel? Most experts say that you should plug in your car when the temperature gets to about -15° or -20° degrees Celsius. If you have a diesel engine, though, you may have to plug in the block heater at a warmer winter temperature. Diesel engines can be harder to start in even slightly cold weather. What temperature is too cold for diesel? Diesel fuel gelling has the potential to occur when temperatures drop below 32 degrees Fahrenheit, although the exact temperature it happens at will vary from fuel...