blue I don't know if its needed or not but after draining the radiator I flushed it with distilled water and drained a second time b4 putting the engine ice in, you'll need 2 bottles of the engine ice , it will take 1 3/4 bottles
08 zx14se Brocks CT Duals, Brocks street map, Driven 16/43 sprockets,EK ZZZ Chain,MRA Windscreen, Roaring Toyz Diamond Cut Grips Pingel Elec shifter, Hyper-Pro RSC Damper, BlackChrome Wheels, Sargent Seat,Factory Pro Velocity Stacks,PCIII USB,Bonneville Pro, TPX Radar/Laser Detector, TPX Laser Jammer, Goodridge Shadow series braided lines front and rear, Rifleman 1/5 turn throttle, Fusion LED Stage IV Kit, DDM HID's 10,000k