Mayhems thermal performance focused premixed PC coolant for water cooled computer systems and loops. Mayhems longest operational lifetime coolant Prolongs your equipment life and thermal cooling efficiency Specially formulated to protect your water cooling equipment from corrosion and scale build up Colour: Ozone Clear Blue (UV reactive) Mayhems XT1 is our thermal performance focused coolant for water cooled computers. It is therefore recommended for use in systems where a ‘thermal performance’ product is preferred.