The KoolTek Cooling System Analyzer from Leitenberger assists technicians in troubleshooting cooling system failures and verifies correct operation of the system components. KoolTek helps pinpoint common cooling problems, tests the opening of the thermostat and the pressure/opening of the cap, has an easy-to-read display and simple operation. All that is needed to connect this tester is one connection to the radiator/reserve tank with simple adapters and a 12V operation makes this unit portable and great for testing on the road.