2004 HONDA ODYSSEY engine

You may use a synthetic motor oil if
it meets the same requirements
given f or a conventional motor oil: it
displays the API Certif ication Seal
and it is the proper weight. You must
f ollow the oil and f ilter change
intervals given on the maintenance
schedule.
Your Honda does not require any oil
additives. Additives may adversely
af f ect your engine’s or transmission’s
perf ormance and durability.Always change the oil and f ilter
according to the recommendations in
the maintenance schedule. The oil
and f ilter collect contaminants that
can damage your engine if they are
not removed regularly.
Changing the oil and f ilter requires
special tools and access f rom
underneath the vehicle. The vehicle
should be raised on a service station-
type hydraulic lif t f or this service.
Unless you have the knowledge and
proper equipment, you should have
this maintenance done by a skilled
mechanic.
Run the engine until it reaches
normal operating temperature,
then shut it off. Open the hood and remove the
engine oil f ill cap. Remove the oil
drain bolt and washer f rom the
bottom of the engine. Drain the oil
into an appropriate container.
1. 2.
A dding Engine Oil, Changing the Oil and Filter
Maint enance
Synthetic Oil
Engine Oil A dditivesChanging the Oil and Filter
212
WASHER
DRAIN BOLT

Remove the oil f ilter and let the
remaining oil drain. A special
wrench (available from your
Honda dealer) is required.Refill the engine with the recom-
mended oil.
Engine oil change capacity
(including f ilter):
Replace the engine oil f ill cap.
Start the engine. The oil pressure
indicator light should go out within
5 seconds. If it does not, turn of f
the engine and check your work.
Let the engine run f or several
minutes, then check the drain bolt
and oil f ilter f or leaks.
Turn of f the engine and let it sit
f or several minutes, then check
the oil level on the dipstick. If
necessary, add more oil.
Install a new oil f ilter according to
the instructions that come with it.
Put a new washer on the drain bolt,
then reinstall the drain bolt.
Tighten it to: 9. 8. 7. 6.
4.
5. 3.
Changing the Oil and Filter
Maint enance213
NOTICE:OIL FILTER
4.6 US qt (4.4)
29 lbf·ft (39 N·m , 4.0 kgf·m) Improper disposal of engine
oil can be harmf ul to the environment.
If you change your own oil, please
dispose of the used oil properly. Put it
in a sealed container and take it to a
recycling center. Do not discard it in a
trash bin or dump it on the ground.

If the coolant level in the reserve
tank is at or below the MIN line, add
coolant to bring it up to the MAX line.
Inspect the cooling system f or leaks.Always use Honda All Season
Antif reeze/Coolant Type 2. This
coolant is pre-mixed with 50 percent
antif reeze and 50 percent water.
Never add straight antifreeze or
plain water.
If Honda antif reeze/coolant is not
available, you may use another
major-brand non-silicate coolant as a
temporaryreplacement.Makesureit
is a high-quality coolant
recommended f or aluminum engines.
Continued use of any non-Honda
coolant can result in corrosion,
causing the cooling system to
malf unction or f ail. Have the cooling
system f lushed and ref illed with
Honda antif reeze/coolant as soon as
possible.If the reserve tank is completely
empty, you should also check the
coolant level in the radiator.
Engine Coolant
Maint enance
A dding Engine Coolant
214
RESERVE TANK
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.

When the radiator and engine are
cool, relieve any pressure in the
cooling system by turning the
radiator cap counterclockwise,
without pressing down.
Remove the radiator cap by
pushing down and turning
counterclockwise.The coolant level should be up to
the base of the f iller neck. Add
coolant if it is low.Pour coolant into the reserve tank.
Fill it to half way between the MAX
and MIN marks. Put the cap back
on the reserve tank.
Do not add any rust inhibitors or
other additives to your vehicle’s
cooling system. They may not be
compatible with the coolant or
engine components.
Pour the coolant slowly and caref ully
so you do not spill. Clean up any
spills immediately; it could damage
components in the engine
compartment. Put the radiator cap back on, and
tighten it fully.
3. 4.
5.
1.
2.
Engine Coolant
Maint enance215
RADIATOR CAP RESERVE TANK

Check the f luid level with the engine
at normal operating temperature.Park the vehicle on level ground.
Shut of f the engine.
Remove the dipstick (yellow loop)
f rom the transmission, and wipe it
with a clean cloth.
When you ref ill the reservoir, clean
the edges of the windshield wiper
blades with windshield washer f luid
on a clean cloth. This will help to
condition them. Fill the reservoir with a good-quality
windshield washer f luid. This
increases the cleaning capability and
prevents f reezing in cold weather. The low washer
level indicator will come on when the
level is low (see page ). Check the reservoir’s f luid level by
removing the cap and looking at the
level gauge attached to the cap. Check the f luid level in the
windshield washer reservoir at least
monthly during normal use. This
reservoir supplies the windshield and
rear window washers. 1.
2.
64
On Canadian models:
Windshield Washers, A ut omat ic T ransmission Fluid
Maint enance
Automatic Transmission Fluid
Windshield Washers
216
NOTICE:
LEVEL GAUGE
DIPSTICK
Do not use engine antif reeze
or a vinegar/water solution in the
windshield washer reservoir. Antif reeze
can damage your vehicle’s paint, while
a vinegar/water solution can damage
the windshield washer pump. Use only
commercially-available windshield
washer f luid.

To thoroughly f lush the transmission,
the technician should drain and ref ill
it with Honda ATF-Z1, then drive the
vehicle f or a short distance. Do this
three times. Then drain and ref ill the
transmission a final time.Insert the dipstick all the way back
into the transmission securely as
shown in the illustration.
The transmission should be drained
and ref illed with new f luid according
to the time and distance recommen-
dations in the maintenance schedule.
If you are not sure how to add f luid,
contact your Honda dealer.
If the level is below the lower
mark, remove the f ill plug and add
f luid to bring it to the upper mark.
Pour the f luid slowly and caref ully
so you do not spill. Clean up any
spills immediately; it could damage
components in the engine
compartment.
Always use Honda ATF-Z1
(Automatic Transmission Fluid). If
it’s not available, you may use a
DEXRON
III automatic
transmission f luid as a temporary
replacement. However, continued
use can af f ect the shif t quality.
Have the transmission f lushed and
ref illed with Honda ATF-Z1 as
soon as it is convenient.
Insert the dipstick all the way into
the transmission as shown.
Remove the dipstick and check
the f luid level. It should be
between the upper and lower
marks. 5.
6.
3.
4.
Automatic Transmission Fluid
Maint enance217
DIPSTICK
UPPER MARKLOWER MARK

Check the f luid level in the brake
f luid reservoir monthly. Replace it
according to the maintenance
schedule recommendations.
The f luid level should be between
theMINandMAXmarksontheside
of the reservoir. If the level is at or
below the MIN mark, your brake
system needs attention. Have the
brake system inspected f or leaks or
worn brake pads.Always use Honda Heavy Duty
Brake Fluid DOT 3. If it is not
available, you should use only DOT 3
or DOT 4 f luid, f rom a sealed
container, as a temporary
replacement.
Brake f luid marked DOT 5 is not
compatible with your vehicle’s
braking system and can cause
extensive damage. Pour the f luid slowly and caref ully so
you do not spill. Clean up any spills
immediately; it could damage
components in the engine
compartment. Using any non-Honda brake f luid can
cause corrosion and decrease the lif e
of the system. Have the brake
system f lushed and ref illed with
Honda Heavy Duty Brake Fluid
DOT 3 as soon as possible.
Brake Fluid
Maint enance218
MAX
MIN

µµ
Pour the f luid slowly and caref ully so
you do not spill. Clean up any spills
immediately; it could damage
components in the engine
compartment. Always use Honda Power Steering
Fluid. You may use another power
steering f luid as an emergency
replacement, but have the power
steering system f lushed and ref illed
with Honda PSF as soon as possible.
A low power steering f luid level can
indicate a leak in the system. Check
the f luid level f requently, and have
the system inspected as soon as
possible.
The timing belt should be replaced
at the intervals shown in the
maintenance schedule.
Replace the belt at 60,000 miles
(100,000 km) if you regularly drive
your vehicle in one or more of these
conditions:
In very high temperatures
(over 110°F, 43°C).
In very low temperatures
(under 20°F, 29°C).
Check the level on the side of the
reservoir when the engine is cold.
The f luid should be between the
UPPER LEVEL and LOWER LEVEL.
If not, add power steering f luid to the
UPPER LEVEL mark.
Power Steering Fluid, Timing Belt
Maint enance
Power Steering Fluid T iming Belt
219
NOTICE:
UPPER LEVEL
LOWER LEVEL
T urning the steering wheel to
f ull lef t or right lock and holding it
there can damage the power steering
pump.