Operator`s manual

Cooling System 37
Recommended coolant consists of a 50/50
mixture of antifreeze and clean water. Never
run the engine with water only. Regardless of
the season, the coolant should always contain
at least 40 to 60 percent ethylene glycol
(antifreeze). The antifreeze also contains
anti-corrosion agents that the cooling system
needs to stay functional.
Note: DO NOT use a winterfront for the
cooling system. See the Operator’s Manual,
Engine Start and Operation, for more
information.
Note: DO NOT mix regular antifreeze into
coolant mixed with extended life antifreeze.
The extended life properties can not be
maintained, with much reduced service
interval as a result.
Engine design requires the thermostat in the
engine during summer and winter. Correct
engine temperature should be a minimum of
165
F (75 C) with a properly functioning
thermostat.
WARNING
Coolant may be combustible. Coolant
leaked or spilled onto hot surfaces or
electrical components can cause a fire.
Clean up coolant spills immediately.
DO NOT add cold coolant to an overheated
engine because a cracked cylinder head
and/or block may result.
W2003082