For pavement track machines that are not allowed to use glycol based coolant. High performance corrosion protected deionized inhibited water with surfactant. Ready to use with no mixing is required, does not offer freeze protection. If propylene glycol is permitted, Evans NPG Coolant is a superior option. If there are no restrictions on engine coolant options, Evans Powersports Coolant or High Performance Coolant are the best choices available.