The Flo-Dynamics CMS-120 Coolant Maintenance System, with a single 20-gallon tank, allows a technician to quickly drain and refill a large capacity cooling system in minutes. Using push/pull technology, the CMS-120 simultaneously uses pressure and vacuum, speeding up both the draining and filling processes. Refilling without the need to spend hours bleeding air from a cooling system is easy, using push/pull technology and a vehicle’s Flush-Face Quick Connect Coupler cooling system adapter. Without the need to use a drain pan, you can safely and quickly drain a 14-gallon cooling system in approximately 10 minutes, and refill without air pockets in approximately 13 minutes. The CMS-120 will save repair time costs while creating a safer shop environment by preventing coolant spills.