HONDA 2000 Passport - Owner's Manual - Manual (Page 216)

The engine cooling system is
designed to maintain the engine at
the proper operating temperatures.
The cooling system was filled at
the factory with a quality engine
coolant. The engine cooling system
is designed to use coolant (a
mixture of water and ethylene
glycol antifreeze) rather than plain
water. The engine coolant solution
should be used year-round. It has
many advantages such as:
provides freezing protection as
lowas — 33°F( — 36°C)
provides boiling protection up
to262°F(128°C)
protects against rust and
corrosion in the cooling system
maintains the proper engine
temperature for efficient
operation and emission control
allows proper operation of the
engine coolant temperature gauge
See the Maintenance Schedule in
this section to find out when the
engine coolant must be replaced.
Checking the Coolant Level
Check the engine coolant level at
the interval shown in the
Maintenance Schedule unless there
is evidence of leaking or
overheating. The engine coolant
level should be between the
maximum and the minimum level
marks on the radiator reserve tank.
Care and Maintenance
Recommended Lubricant
Engine Cooling System
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