1995 OLDSMOBILE SILHOUETTE engine overheat

How to Add Coolant to the Coolant
Recovery Tank
If you haven’t found a problem yet, but the coolant
level isn’t at or above the
FULL HOT 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.)
NOTICE:
In cold weather, water can freeze and crack the
engine, radiator, heater core and other parts. Use
the recommended coolant.
When the coolant in the coolant recovery tank is at or
above the
FULL HOT 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.
5-19
ProCarManuals.com

Engine Coolant
The following explains your cooling system and how to
add coolant when it is low.
If you have a problem with
engine overheating, see “Engine Overheating”
in the
Index.
The proper coolant for your Oldsmobile
will:
0 Give freezing protection down to -34°F (-37°C).
0 Give boiling protection up to 262 OF ( 128 ” C).
Protect against rust and corrosion.
0 Help keep the proper engine temperature.
0 Let the warning lights work as they should.
What to Use
Use a mixture of one-half clean water (preferably
distilled)
and one-half antifreeze that meets “GM
Specification
1825M,” which won’t damage aluminum
parts. You can also use a recycled coolant conforming to
GM Specification 1825M with a complete coolant flush
and refill. Use GM Engine Coolant Supplement (sealer)
with any complete coolant flush and refill.
If you use
this mixture,
you don’t need to add anything else.
NOTICE:
If you use an improper coolant mix, your engine
could overheat and be badly damaged.
The
repair cost wouldn’t be covered by your
warranty.
Too much water in the mix can freeze
and crack the engine, radiator, heater core and
other parts.
6-22
ProCarManuals.com

To Add Coolant
If you need more coolant, add the proper mix at the
cnolclnt recoverv tank.
Add coolant mix at the recovery tank, but be careful not
to spill it.
Radiator Pressure Cap
NOTICE:
Your radiator cap is a 15 psi (105 kPa)
pressure-type cap and must be tightly installed to
prevent coolant loss and possible engine damage
from overheating. Be sure the arrows on the cap
line up with the overflow tube on the radiator
filler neck.
When you replace your radiator pressure cap, an AC@
cap is recommended.
Thermostat
Engine coolant temperature is controlled by a thermostat
in the engine coolant system. The thermostat stops the
flow of coolant through the radiator until the coolant
reaches
a preset temperature.
When you replace your thermostat, an
AC@ thermostat
is recommended.
6-24
ProCarManuals.com

To Resume a Set Speed ........................ 2-46
ToSet
..................................... 2-45
Traction Control
............................. 2-45
UseonHills
................................ 2-48
Cupholders
................................. 2.65. 66
Customer Assistance for the Hearing or
SpeechImpaired
............................... 8-2
Customer Assistance Information
................... 8- 1
Customer Satisfaction Procedure .................... 8- 1
Damage. Finish ............................... 6-48
Dead Battery ................................... 5-2
Defects. Reporting
............ i .................. 8-4
Defensive Driving
............................... 4- 1
Defogging ..................................... 3-6
Defrosting
..................................... 3-6
Directional Controls
.............................. 3-2
Dolby@
B Noise Reduction ....................... 3- 13
Dome Lamp ................................... 2-55
Door Lock. Sliding .............................. 2- 12
Door Lock. Sliding Door Child Security ... ......... 2- 17
DoorLocks ..................................... 2-3
Doors. Front
.......................... I ......... 2-3
Driver Position
................................. 1 - 1 8
Driver’s 4-Way Manual Seat
....................... 1 - 1
Driver’s 6-Way Power Seat ......................... 1-3
Driving On..Grades. With a Trailer .................. 4-37
Driving
AtNight
................................... 4-15
Defogger. Rear Window .......................... 3-7 City
....................................... 4-19
Defensive
................................... 4-1
Drunken
.................................... 4-2
Freeway
.................................... 4-20
In a Blizzard
................................ 4-27
In Foreign Countries
........................... 6-4
In the Rain
.................................. 4-17
OnCurves .................................. 4-11
On Hill and Mountain Roads ................... 4-23
OnSnowandIce
............................. 4-25
Through Deep Standing Water
.................. 2-27
Winter
..................................... 4-24
With a Trailer
............................... 4-35
Drunken Driving
.......... ..................... 4-2
Dump and
Stow Feature ........................... 1-6
Electrical Equipment. Adding .......... 2.25. 3.21. 6-51
Electronic Level Control
......................... 2-68
Enginecoolant
................................. 6-22
Adding
.................................... 6-23
Checking ................................... 6-23
Heater
................................ 2.27. 6. 16
Temperature Gage
............................ 2-80
Exhaust
.................................... 2-37
Identification ................................ 6-51
Running it While You’re Parked
................. 2-37
Specifications
.. :’. ........................... 6-60
Starting
.................................... 2-24
Engine
Overheating
................................. 5-15
9-4
ProCarManuals.com