... fuel heating system, via high-tech intelligent control, you can preheat car engine and cab without starting engine, reduce the abrasion ... engine will be circularly heated through the heater furnace cavity. In such way, the temperature of engine, warm blower, water ... scope Applicable to all kinds of car, microbus, light-van, minibus, etc. Diesel liquid heater( 12V, Timer control) coolant engine preheater ...