VCX-1 PRODUCT FEATURES Vacuum coolant from the radiator and charge new coolant back. • Simply remove the vehicle radiator or overflow cap, insert vacuum cone and go. • Special large volume 20 quart coolant cylinders allow service of cars & trucks. • New vs. used coolant visual sells the service. • Shop air operated • Quick changeover from one antifreeze type to another. • Removes 80% of coolant in a single pass.