A nozzle and tank assembly includes a dump trailer that is attachable to a truck and a fluid tank mounted to the truck. A pump is disposed on the fluid reservoir for pumping a lubricant contained in the fluid tank. A spray bar is attached to the dump trailer and the spray bar has a plurality of spray nozzles each directed into the dump trailer. A supply line is fluidly attached to the pump such that the supply line receives the lubricant when the pump is turned on. The supply line is fluidly coupled to the spray bar such that the supply line delivers the lubricant to the spray bar thereby facilitating the spray nozzles on the spray bar to spray the lubricant into the dump trailer. In this way the lubricant inhibits cargo from sticking to the dump trailer when the dump trailer is actuated into a dumping condition.