BOMBARDIER Ski-doo MX ZX 440 Operator's Manual page 14

Coolant Reservoir
Use a blend of 50/50 distilled water and ethylene-glycol (P/N 293 600
038). That blend will protect the system from freezing as low as - 37°C
(- 35°F).
Fill up to mark when engine is cold.
1 2
A32C10A
1. Coolant pump shaft oil filling mark
2. Coolant cold level mark
12