The Lisle Spill-Free Funnel, No. 24680, features an improved straight extension and an additional 45-degree elbow for hard-to-reach applications along with a threaded cap adapter for Ford applications. The Spill-Free Funnel eliminates trapped air pockets, which can cause erratic cooling system and heater performance. It controls the amount of coolant entering the system and enables unattended filling of the cooling system. It includes five adapters to fit most domestic and import cars and light trucks.