Safe,Environmentally friendly,Intelligent,Economic 12v or 24v Diesel or Gosline For car,truck,van,boat,RV,caravan,etc. Technical ... .2. Principle of operation: This heating system uses the gas or diesel as the fuel, after heating the exchanger, the hot ... ) All kinds of ship, yacht. 5KW Air parking heaters diesel or gasoline heating for car truck van boat RV cab and ...