OEMTOOLS 27066 Coolant System Refiller Kit for Radiator and Heating Core

The OEMTOOLS Universal Cooling System Filler is designed to purge problematic airlocks, check for vacuum leaks, and allow for a quick and easy refilling of the cooling system. As air bubbles in the coolant system can cause serious issues like overheating and engine damage, this tool is a valuable asset.

The use of the OEMTOOLS Universal Cooling System Filler is straightforward. First, the radiator must be completely drained of fluid, and the car should be engaged with the heater turned on to ensure the heater coil is open and can be evacuated and refilled.

Next, the user needs to find the right-sized rubber bush for the radiator neck or coolant reservoir and firmly fit the gauged cooling system adapter into place. The tightener on the valve is then turned clockwise until it snugly fits the radiator neck.

The venturi valve is then connected to the cooling system adapter, and shop air is connected to the venturi valve. The evacuator hose is connected to the other side of the venturi valve, ensuring all valve openings are closed until the shop air is connected.

The hose on the other side of the venturi valve may evacuate any trapped fluid, so it's recommended to place that tube into a waste fluid pan. Once the air line is attached, the venturi valve and the intermediate valve on the adapter assembly are opened, drawing a vacuum until the gauge reads between 50 and 60 cmHG.

After closing the intermediate valve and venturi valve, the user can check for leaks in the system. If the vacuum drops, there is a leak that needs to be addressed. If the vacuum remains stable, the user is ready to refill the coolant.

The venturi valve is removed (with the cooling system adapter valve turned off), and the coolant hose is connected. The other end of the hose is dropped into a large container of coolant mixed to the user's preferred specifications. The coolant tube valve is opened, and the coolant will flow. Using a large container ensures that the user won't run out and introduce air to the coolant system.

When the gauge reaches 0 or the coolant stops flowing, the radiator is full. The OEMTOOLS Universal Cooling System Filler is an efficient way to refill the entire cooling system, including the heater core, eliminating time-consuming bleeding and purging while completely removing all trapped air. It also makes it easy to check for leaks while the system is under vacuum. The tool comes with three adapters to fit most common radiator necks and coolant reservoirs, and all that's needed to use it is a shop air compressor, as the included venturi valve turns any air compressor input into a strong vacuum force.

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