The BG Large Capacity Coolant Transfusion System, No. CT6, installs 50/50 coolant quickly and efficiently while simultaneously removing worn out coolant. The CT6 provides a quick and efficient alternative to traditional drain-and-fill coolant exchange methods, according to the company. With a 15-gal capacity, it is designed to service heavy duty equipment with or without running the engine. This process sends clean fluid through places in the coolant system not accessible when fluid is flowing in the regular direction.