Motorcycle Requirements 6) Advanced and Intermediate group riders must use water, water wetter or a non-ethyl glycol based anti-freeze/coolant. Approved Poly Glycol brands are: Evans, 7th Gear, Liquid Performance, and Engine Ice. Automotive ethyl glycol based coolants are not allowed. Regular coolant is allowed for Novice, but if you use Engine Ice....I don't believe you have to mix it with water, ust pour it in. I did this on a few bikes now, and all I did was just drain the regular coolant out and a quick flush with distilled water($1.75? at any grocery) and then filled it up with Engine Ice and did the air bleed process.