1993 Oldsmobile 88 Owner's Manual - Page 208
1993 Oldsmobile 88 Manual
Page 208 highlights
How to Add Coolant to the Radiator: 2. Then keep turning the pressure cap, but now push down as you turn it. 1. You can remove the radiator pressure Remove the pressure cap. cap when the cooling system, including the radiator pressure cap and upper radiator hose, is no longer hot. Turn the pressure cap slowly to the left until it €irst stops. (Don't press down while turning the pressure cap.) If you hear a hiss, wait for that to stop. A hiss means there is still some pressure left. 3 Fill the radiatorwith the propermix, . up to the base the filler neck. of 207
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How
to
Add
Coolant
to
the
Radiator:
1.
You
can
remove
the
radiator
pressure
cap
when
the
cooling
system,
including
the
radiator
pressure
cap
and
upper
radiator
hose,
is
no
longer
hot.
Turn
the
pressure
cap
slowly
to
the
left
until
it
€irst
stops.
(Don’t
press
down
while
turning
the
pressure
cap.)
If
you hear a
hiss,
wait
for
that
to
stop.
A
hiss
means there
is
still
some
pressure
left.
2.
Then
keep
turning
the
pressure
cap,
but
now
push
down
as
you
turn
it.
Remove the
pressure
cap.
3.
Fill
the
radiator
with
the
proper
mix,
up
to
the
base
of
the
filler
neck.
207