The Robinair CoolTech Coolant Exchanger (No. 75700) features a 10-minute exchange process without needing to wait for a vehicle to warm up. An "engine off" setting ensures all pulleys, belts and fan blades are idle while work is performed. Powered by 90 psi shop air, the machine requires no electricity to operate, and allows a technician to test a system for leaks before refilling. Two separate on-board coolant supply tanks allow the use of two different coolant types for added versatility.