EK-Cryofuel Loop Superflush is a solution made to flush out manufacturing residues, impurities, and leftover chemicals. It can be used either as a stand-alone solution or after the EK-CryoFuel Loop Cleaner. Stand-alone - prepares a new, unused loop for a new coolant and extends its life, improves stability, and reduces soft tube yellowing. Follow up - after using EK-CryoFuel Loop Cleaner to clean gunk and old coolant, Superflush is used to pick up and rinse any residue chemicals left from the cleaner. The concentrate is to be mixed with approximately 2750ml of distilled water (1:11 ratio). This solution does not act as a corrosive inhibitor or biocide for coolants. Compatible with all EK soft and hard tubing. Model: TR-89771-86979