HONDA 2005 Civic Hybrid - Owner's Manual - Manual (Page 156)

If the reserve tank is completely
empty, you should also check the
coolant level in the radiator.
When the radiator and engine are
cool, relieve any pressure in the
cooling system by turning the
radiator cap counterclockwise,
without pressing down.
Remove the radiator cap by
pushing down and turning
counterclockwise.
The coolant level should be up to
the base of the filler neck. Add
coolant if it is low.
Do not add any rust inhibitors or
other additives to your vehicle’s
cooling system. They may not be
compatible with the coolant or
engine components.
Pour coolant into the reserve tank.
Fill it to halfway between the MAX
and MIN marks. Put the cap back
on the reserve tank.
Put the radiator cap back on and
tighten it.
Pour the coolant slowly and
carefully so you do not spill. Clean
up any spill immediately; it could
damage components in the engine
compartment.
1.
2.
3.
4.
5.
Engine Coolant
154
RADIATOR CAP
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.
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