A system for cleaning vehicles that includes at least one drain beneath the vehicle for collecting spent water used in the cleaning of the vehicle; at least one filter for filtering the spent water; a storage tank for receiving and storing the filtered water; a boiler for receiving water from the storage tank, said boiler heating the water so as to produce steam that is useable in cleaning the vehicle; and an oil recovery apparatus for receiving oil from the vehicle and re-claiming the vehicle oil in order to operate the boiler.