Abstract: A vehicle fluid heating system is provided for achieving an elevated pre-determined fluid temperature for at least one fluid of a first and second vehicle during an idle period having a duration defined by a start point and an end point. The heating system includes a first vehicle fluid heater that is configured for being coupled to the first vehicle in thermal communication with the first fluid of the first vehicle. A second vehicle fluid heater is provided that is configured for being coupled to the second vehicle in thermal communication with the first fluid of the second vehicle. At least one temperature sensor is provided for sensing a temperature of a temperature source that has a correlative relationship to the first fluid of the first and second vehicles. A settable timer is provided for enabling the user to establish a start point and an end point of the idle period of the first and second vehicles.