The OEM Automotive Tools Smoke Diagnostic Machine, No. 24534, pinpoints all types of system leaks including air intake, cooling, evaporation, fuel, exhaust and vacuum systems with smoke. The machine uses mineral oil and workshop air supply to generate smoke at a low pressure, connects to a 12V vehicle battery and includes four rubber cones. It features single-button operation, flow control, auto power-off and a one-year limited warranty.