The Schwaben Coolant Refill/Air Purge Tool is a universal tool that uses the Venturi method to draw a vacuum on the entire cooling system, ensuring that no air pockets are left in the cooling system while refilling. This tool comes complete with all of the fittings and adapters you will need, and it comes in a custom-molded case for easy storage.Want to learn more? Check out this product highlight featured on the ECS Tuning YouTube channel!This tool requires access to a standard air compressor with a minimum rating of 90 PSI (6.2 bar). A convenient, though not required part to complete the job is a container large enough to hold the entire coolant mixture capacity for your vehicle. This will dramatically reduce the risk of any unwanted air being drawn into the system. This tool is designed to refill the cooling system after it has been drained.Note: must use thread sealer on supplied air nipple.Note: Detailed instructions for this tool can be found on this page by first clicking on the "Installation" tab, then clicking on the "Manufacturer's Information" PDF.For manual unit order ES3437239 to be used with oil extractor.