Lisle's spill-free funnel, No. 24610, includes threaded cap and adapter for newer GM threaded-style radiator openings. The funnel eliminates trapped air pockets which usually cause erratic cooling system and heater performance. It controls the proper amount of coolant entering systems, and enables unattended filling of the cooling system. In addition, the funnel eliminates squeaky belts caused by coolant overthrow and protects the environment. Four adapters fit most domestic and import cars and light truck. An angled neck allows use on radiator caps that are placed at an angle.
