Page 217 of 387
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 mark, add a 50/50 mixture of
clean water (preferably distilled) and a proper antifi-eeze at
the coolant recovery tank. (See “Engine Coolant” in the
Index for more information about the proper coolant mix.)
Adding only plain water to your cooling system
can
be dangerous. Plain water, or some other
liquid
like alcohol, can boil before the proper
coolant mix
will. Your vehicle’s coolant warning
system is set
for the proper coolant mix. With
plain water or the wrong mix, your engine couId
get
too hot but you wouldn’t get the overheat
warning. Your engine could catch fire and
you or
others
could be burned. Use a 50/50 mix of clean
water and a proper antifreeze.
NOTICE:
In cold weather, water can freeze and crack the
engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
coolant
mix.
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Page 261 of 387

What to Use
Refer to the Maintenance Schedule to determine what
W of lubricant to use. See “Recommended Fluids and
Lubricants”
in the Index.
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.
A 50/50 mixture of water and the proper coolant for
your Geo will:
Give freezing protection down to -33 “F (-36°C).
0 Give boiling protection up to 258°F (125°C).
Protect against rust and corrosion.
Help keep the proper engine temperature,
Let the warning lights and gages 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 1825-M, which won’t damage aluminum
parts. You can also use a recycled coolant conforming
to
GM Specification 1825-M with a complete coolant flush
and refill. If you use this mixture, you don’t need to add
anything else.
/i CAUTTON:
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid like alcohol, can boil before the proper
coolant mix
will. Your vehicle’s coolant warning
system is set for the proper coolant
mix. With
plain water
or the wrong mix, your engine could
get too hot
but you wouldn’t get the overheat
warning. Your engine could catch
fire and you or
others could be burned. Use a 50/50 mix of clean
water and the proper antifreeze.
6-24
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Page 377 of 387

Driving City
........................................ 4-34
Defensive
.................................... 4-1
Drunken ..................................... 4-2
Freeway
.................................... 4-35
Guidelines
.................................. 4- 14
InaBlizzard ................................. 4-41
In. Foreign Countries ........................... 6-4
In the Rain
.................................. 4-31
Night ...................................... 4-29
Off-Road
................................... 4-14
On Curves.
.................................... 4-9
On Grades While Towing a Trailer ............... 4-53
On Hill and Mountain Roads .................... 4-37
On Snow
and Ice ............................. 4-40
Throughwater
............................... 4-33
WetRoads
.................................. 4-31
Winter
...................................... 4-39
With a Trailer
................................ 4-52
DrunkenDriving
................................ 4-2
Easy Entry Seat ................................ 1-4
Electrical
Equipment. Adding ................. 2-9. 6-57
Electrical System
............................... 6-57
Engine
........................................ 6-8
Coolant
..................................... 6-24
Coolant Level Check
.......................... 7-47 Coolant Temperature
Gage
. . ......... 2-64
Exhaust
................ ......... 2-25
Identification
...... ........... 6-57
Main Fuse Block ...... ......... 6-60
Oil Level Check ............ ......... 7-47
Overheating
................................. 5-12
Running While Parked
......................... 2-25
Specifications
................................ 6-62
Stating Your
............................. 2-8, 2-9
Engine Compartment
Main Fuse Block .............. 6-60
EngineOil ..................................... 6-9
Adding
.............. ................... 6 -10
Additives ................................... 6-12
Checking ................................... 6-10
Used
....................................... 6-13
When to Change
.............................. 6-12
Ethanol
........................................ 6-3
Exhaust, Engine
.................. .............. 2-25
Fabric Cleaning
............................... 6-49
Fifth
Gear, Manual Transmission ................... 2-14
FillingYourTank
................................ 6-4
Filter.
Air ..................................... 6-14
Finish Care
.................................... 6-52
FinishDamage
................................. 6-55
First Gear, Manual Transmission ................... 2-14
Flashers, Hazard Warning
......................... 5-1
9-4
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