Mazda CX-9 Grand Touring 2009 Manual page 570

Fig. 2: Identifying Cooling System Cap Mark
Courtesy of MAZDA MOTORS CORP.
1. Verify that the engine coolant level in the coolant reserve tank is between the F and L marks.
If the engine coolant level is below the L mark, add engine coolant.
Fig. 3: Identifying Engine Coolant Level In Coolant Reserve Tank
Courtesy of MAZDA MOTORS CORP.
ENGINE COOLANT PROTECTION INSPECTION [MZI-3.7]
1. Measure the engine coolant temperature and specific gravity using a thermometer and a hydrometer.
CAUTION:
2008 Mazda CX-9 Grand Touring
2008 ENGINE Cooling System (MZI-3.7) - Mazda CX-9
Use engine coolant at a concentration that meets the
environmental conditions in which the vehicle is driven,
otherwise engine damage could occur.
The engine has aluminum parts and must be protected by an
ethylene-glycol-based coolant to prevent corrosion and
freezing.
Do not use coolants containing Alcohol, Methanol, Borate or
Silicate. These coolants could damage the cooling system.
Use only soft (demineralized) water in the coolant mixture.
Water that contains minerals will cut down on the coolant's
effectiveness.
Engine coolant damages paint. If engine coolant does get on a