1995 Oldsmobile Cutlass Supreme engine coolant

If you get the overheat warning with no sign of steam,
tw this for a minute or
so:
1. Turn off your air conditioner.
2. Turn on your heater to full hot at the highest fan
3. If you're in a traffic jam, shift to NEUTRAL (N);
speed and open the window as necessary.
otherwise, shift to the highest gear while driving
--
DRIVE (D) or THIRD (3).
If you no longer have the overheat warning, you can
drive. Just to be safe, drive slower for about ten minutes.
If the warning doesn't come back on, you can drive
normally.
If the warning continues, pull over, stop, and park your vehicle right away.
3.1L L82 (Code M) Engine
If there's still no sign of steam, you can idle the engine
for two or three minutes while you're parked, to see if
B. Radiator pressure cap
the warning stops. But then, if you still have the warning,
turn off the engine and get everyone out of the
vehicle
until it cools down.
You may decide not to lift the hood but to get service
help right away.
A. Coolant recovery tank ,
C. Electric engine fans
5-14

3.4L LO1 (Code X) Engine Y The coolant level should be at or above the COLD mark.
If it isn’t, you may have a leak in the radiator hoses,
heater hoses, radiator, water
pump or somewhere else in
the
cooling system.
If the coolant inside the coolant recovery tank is boiling,
don’t do anything else (until it
cools down.
5-15

NOTICE:
Engine damage from running your engine
without coolant isn’t covered
by your warranty.
If there seems to be no leak, with the engine on check to
see if
the electric engine fan(s) are running. If the engine
is overheating, both fan(s) should be running. If they
aren’t, your vehicle needs service.
How to Add Coolant to the Coolant
Recovery Tank
If you haven’t found a problem yet, but the’coolant level
isn’t at the
COLD mark, add a 50/50 mixture of clean
water (preferably distilled) and a proper antifreeze at the
coolant recovery ‘tank. (See “Engine Coolant” in the
Index for more information about the proper coolant
mix
.)
5-16

NOTICE:
In cold weather, water can freeze and crack,,the ... , . i . ar
engine, radiator, heater core and other parts.' Use
the recommended coolant.
When the coolant in the coolant recovery tank is at the
COLD mark, start your vehicle.
If the overheat warning continues, there's one more
thing you can try.
You can add the proper coolant mix
directly to the radiator, but be sure the cooling system is
cool before you do it.
5-17

3. After the engine cools, open the coolant air bleed
valve.
3: ...
. -. 1 .. ., ..
,. I, . " "3; 1L L82 (Code M) Engine
3.1L V6 (VIN Code M): There are two bleed valves.
One
is located on the thermostat housing. The other is
located on the thermostat bypass tube.
/ 5-19

3.4L LQ1 (Code X) Engine
They are located
on the thermostat housing and heater
inlet pipe.
1 3.4L V6 (VIN Code X): There are two bleed valves.
4. Fill the radiator
with the proper
mix,
up. to the base
of the 'filler neck.
If
you see a stream.of coolant coming from an air
bleed valve, close the valve. Otherwise, close the-
valves after the radiator i.s filled.
5. Rinse or wipe any spilled coolant from the engine
and compartment.

6. Then fill the coolant recovery tank to the COLD
7. Put the cap back on the coolant recovery tank, but
mark.
-
leave the
radiator pressure cap off.
8. Start the engine 'and let it run until you can feel the
upper radiator hose getting hot. Watch out for the
engine fans.
filler neck may be lower. If the level
is lower, add
more of the proper
mix through the filler neck until
the level reaches the base of the filler neck.
9. By this time the coolant level inside the radiator
5-21 ~.

10. Then replace the
’ pressure cap. At any
time during this
procedure if coolant
begins to flow out of
the filler neck, reinstall
the pressure cap. Be
sure the arrows on the
pressure cap line up
like this.
11. Check the coolant in the recovery tank. The level in
the coolant recovery tank should be at the HOT
mark when the engine
is hot or at the COLD mark
when the engine
is cold.
If a Tire Goes Flat
It’s unusual for a tire to “blow out” while you’re \
driving,
especially
if you maintain your tires properly. If air goes
out
of a tire, it’s much more likely to leak out slowly.
But if you should ever have a “blowout,” here are a few
tips about what to expect and what to do:
If a front tire fails, the flat tire will create a drag that
pulls the vehicle toward that side. Take your foot
off the
accelerator pedal and grip the steering wheel firmly.,
Steer to maintain lane position, then gently brake to a
stop well out of the traffic lane.
A rear blowout, particularly on a curve, acts much like a
skid and may require the same correction you’d use in a
skid. In any rear blowout, remove your foot from the
accelerator pedal. Get the vehicle under control by
steering the way you want the vehicle to go.
It may be
very bumpy and noisy, but you can still steer. Gently
brake to a stop, well
off the road if possible.
If a tire goes flat, the next part shows how to
use your
jacking equipment to change a flat tire safely.