The reliable and easy-to-operate AF3250 Viper Cooling System Service Center, from Clore Automotive, offers everything from drain-and-fill to recycling. The AF3250 performs backflushes and cleans cooling system to remove harmful contaminants, including scale and rust, as wel as diagnostic pressure checks for leaks. Multiple connection options available, with an assortment of tees and adapters included. This unit is GM-approved, using with the patented Tech Guard Antifreeze Recycling Process. Large 20" filters extend interval between changes. Coolant capacity of 7 gal.