SERVICE AND MAINTENANCE
5-5
transmissions are often overfilled because the fluid level
is
checked when
the fluid
is
cold. When cold, the dipstick shows
that
fluid should be
added. However, the cold
low
reading
is
normal; the fluid level will rise
apout
3/4
inch (19 millimetres) as the fluid warms up from 60°F to
180°F (16°C to 82°C).
Automatic Transmission Drain Intervals
Change the transmission fluid and change the filter (or clean
the
screen)
as outlined
in
Section A
of
the Maintenance Schedulefolder.
ENGINE COOLING SYSTEM
The coolant recovery system
is
standard.
The coolant in the radiator expands with
heat, and the overflow
is
collected in the
recovery tank. When the system cools
down, the coolant
is
drawn back into the
radiator.
The cooling system has been filled
at
the
factory with a quality coolant
that
meets
GM
Specification 1899-M. Because the
cooling system has been designed to use
coolant rather than plain water, the
coolant solution should be used year round.
It
has many advantages, such as:
• provides freezing protection down to -34°F (-37°C),
•
provides boiling protection up to 262°F (128°C),
• protects against rust and corrosion in the cooling system,
• maintains the proper engine temperature for efficient operation
and emission control, and
• allows proper operation
of
the
coolant hot light or gage.
See Section A
of
the Maintenance Schedule folder to find out when
the
coolant must be replaced.
COOLING SYSTEM CARE
[t
is
not usually necessary to remove the
radiator
cap to check coolant
level. Lift the hood and look
at
the
"see
through"
coolant recovery tank.
This should be done
at
regular intervals, such as during fuel stops. When
the engine
is
cold, the coolant level should be
at
or slightly above the
"Add"
("Cold")
mark
on
the
tank. When the engine has fully warmed
up, the level should be
at
or slightly below the
"Full"
("Hot")
mark
on
the tank.
If
the
coolant level
is
low, remove the
cap
on the coolant
recovery tank. Add enough
of
a
50/50
mixture
of
a good quality ethylene
glycol (antifreeze) and water to the
tank
to bring the level up to the
proper mark. Reinstall the
cap
on
the
tank.
There are conditions which can happen, such as air being trapped in the
system,
that
may affect
the
coolant level in the radiator.
It
is
recommended
that
the coolant level in the radiator be checked
at
periodic
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