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FREEZE PROTECTION
The relative concentrations of glycol and water in the
engine coolant determine its freeze protection limit.
Ethylene Glycol
40%
50%
60%
Propylene Glycol
40%
50%
60%
DO NOT use a coolant-water mixture greater than 60%
ethylene glycol or 60% propylene glycol.
OPERATING IN WARM TEMPERATURE
CLIMATES
Always use a recommended engine coolant, even when
operating in geographical areas where freeze protection is
not required.
IMPORTANT: Water may be used as coolant in
emergency situations only.
Foaming, hot surface aluminum and iron corrosion,
scaling, and cavitation occur when water is used as the
coolant,
even when coolant conditioners are added.
Drain cooling system and refill with recommended engine
coolant as soon as possible.
Coolant
Freeze protection limit
-24
C (-12
F)
o
o
-37
C (-34
F)
o
o
-52
C (-62
F)
o
o
Freeze protection limit
-21
C (-6
F)
o
o
-33
C (-27
F)
o
o
-49
C (-56
F)
o
o
OM-C3 11/21
26
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