2003 MAZDA MODEL 6 engine

8-8
Maintenance and Care
Owner Maintenance
Form No. 8R29-EA-02I
Improper or incomplete service may result in problems. This section gives instructions
only for items that are easy to perform.
As explained in the Introduction (page 8-2), several procedure can be done only by a
qualified service technician with special tools.
Improper owner maintenance during the warranty period may affect warranty coverage.
For details, read the separate Mazda Warranty statement provided with the vehicle. If
you’re unsure about any servicing or maintenance procedure, have it done by an
Authorized Mazda Dealer.
There are strict environmental laws regarding the disposal of waste oil and fluids. Please
dispose of your waste properly and with due regard to the environment.
We recommend that you entrust the oil and fluid changes of your vehicle to an Authorized
Mazda Dealer.
Owner Maintenance Precautions
Maintenance Procedures:Performing maintenance work on a vehicle is dangerous if not done properly. You can
be seriously injured while performing some maintenance procedure. If you lack
sufficient knowledge and experience or the proper tools and equipment to do the
work, have it done by a qualified technician.
Running the Engine:
Working under the hood with the engine running is dangerous. It becomes even more
dangerous when you wear jewelry or loose clothing.
Either can become entangled in moving parts and result in injury.
Therefore, if you must run the engine while working under the hood, make certain
that you remove all jewelry (especially rings, bracelets, watches, and necklaces) and
all neckties, scarves, and similar loose clothing before getting near the engine or
cooling fan, with may turn on unexpectedly.
Electrical Fan and Engine Inspection:
Inspecting the engine with the ignition switch in the ON position is dangerous. The
cooling fan could come on unexpectedly even when the engine isn’t running. You
could be seriously injured by the fan. Turn the ignition switch off and remove the key
from the ignition switch when you inspect the engine.
WARNING
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8-9
Maintenance and Care
Owner Maintenance
Form No. 8R29-EA-02I
Engine Compartment Overview
Automatic transaxle fluid-level dipstick
(only for automatic transaxle)
Cooling system cap Power steering
fluid reservoirWindshield washer
fluid reservoir
Engine oil dipstickEngine oil-filler cap
Engine coolant
reservoirBattery
Fuse block
Air filter Brake/Clutch fluid reservoir
Automatic transaxle fluid-level dipstick
(only for automatic transaxle)
Engine oil-filler cap Cooling system cap
Power steering
fluid reservoir Windshield washer
fluid reservoir
Engine oil dipstick Engine coolant
reservoir
Battery
Fuse block
Air filter Brake/Clutch fluid reservoir 2.3-liter engine
3.0-liter engine
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8-10
Maintenance and Care
Owner Maintenance
Form No. 8R29-EA-02I

Recommended Oil
Oil container labels provide important
information.
The quality designation SL
or ILSAC

must be on the label.
Engine oil viscosity, or thickness, has an
effect on fuel economy and cold-weather
operation (starting and oil flow).
Low-viscosity engine oils can provide
improved fuel economy and cold-weather
performance.
But high-temperature weather conditions
require higher-viscosity engine oils for
satisfactory lubrication.When choosing an oil, consider the
temperature range your vehicle will
operate in before the next oil change.
Then select the recommended viscosity
from this chart.
Energy conserving oils are recommended.
A chief contribution they make to fuel
economy is reducing the amount of fuel
necessary to overcome engine friction.

Inspecting Engine Oil Level
1. Be sure the vehicle is on a level
surface.
2. Warm up the engine to normal
operating temperature.
3. Turn it off and wait 5 minutes for the
oil to return to the oil pan.
4. Pull out the dipstick, wipe it clean, and
reinsert it fully.
Engine Oil
FORGASOLINEENGINES
(ILSAC)
–30–20–100 1020304050
–20 0 20 40 60 80 100 120
5W-20
Using oils of viscosity besides those
recommended for specific temperature
ranges could result in engine damage.
CAUTION
OKFull
Low 2.3-liter engine
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8-11
Maintenance and Care
Owner Maintenance
Form No. 8R29-EA-02I
5. Pull it out again and examine the level.
It’s OK between MIN and MAX.
But if it’s near or below MIN, add
enough oil to bring the level to MAX.
6. Make sure the O-ring is positioned
properly before reinserting the
dipstick.

Changing Engine Oil and Filter
Change engine oil and filter according to
Scheduled Maintenance (page 8-3).
Please act responsibly—protect the
environment and take used oil to a
recycling facility. Ask your dealer or a
service station for information.
Don’t add engine oil over MAX. This
may cause engine damage.
Full
OK
Low 3.0-liter engine
CAUTION
Handling Used Engine Oil:Continuous contact with used engine
oil is dangerous. It could cause skin
cancer. Always wash with soap and
water immediately after changing oil
and filter.
Remove any oil splatter from the
exhaust manifold, the exhaust pipe and
the shield. Oil left on these areas will
smoke when the engine is running.
WARNING
CAUTION
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8-12
Maintenance and Care
Owner Maintenance
Form No. 8R29-EA-02I
Changing engine oil1. Warm up the engine for a few minutes
and turn it off. Remove the oil-filler
cap.
2. Remove the drain plug and drain the oil
into a suitable container.
3. Replace the plug tightly after the oil
has thoroughly drained.
4. Fill the engine with new oil to the
MAX mark on the dipstick.
5. Securely replace the oil-filler cap.
6. Start the engine and inspect around the
drain plug for leaks.
7. Turn it off and wait 5 minutes for the
oil to return to the oil pan.
Check the oil level and fill to the MAX
mark if necessary.
Oil capacity (General reference only,
refer to Specifications section for
capacities.)

Changing oil filter
Because you need a special tool to
retighten the filter, an Authorized Mazda
Dealer should do the work.
Checking or Changing Engine Oil:Hot engine oil is dangerous. If the
engine has been running, the engine
oil becomes very hot. You could be
seriously burned. Don’t check or
change the engine oil when the
engine is hot.
WARNING
FrontLoosen
Drain plugTighten 2.3-liter engine
Tighten
Loosen
Front
Drain plug3.0-liter engineNOTE
•
The indicated engine oil capacities
are for general reference purposes
only. When adding or changing oil,
verify the engine oil level with the
oil dipstick.
•
Use only specified engine oil (page
10-3).
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8-13
Maintenance and Care
Owner Maintenance
Form No. 8R29-EA-02I

Inspecting Coolant Level
Inspect the antifreeze protection and
coolant level in the coolant reservoir at
least once a year—at the beginning of the
winter season—and before traveling
where temperatures may drop below
freezing.
Inspect the condition and connections of
all cooling system and heater hoses.
Replace any that are swollen or
deteriorated.
The coolant should be at full in the
radiator and between the FULL or F and
LOW or L marks on the coolant reservoir
when the engine is cool.If it’s at or near LOW or L, add enough
coolant to the coolant reservoir to provide
freezing and corrosion protection and to
bring the level to FULL or F.
Do not overfill.

If new coolant is required frequently,
consult an Authorized Mazda Dealer.
Engine Coolant
Hot Engine:A hot engine is dangerous. If the
engine has been running, parts of the
engine compartment can become very
hot. You could be burned. Don’t
inspect the coolant system or add
coolant when the engine is hot.
WARNING
2.3-liter engine
Radiator coolant will damage paint.
Rinse it off quickly.
3.0-liter engine
CAUTION
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8-14
Maintenance and Care
Owner Maintenance
Form No. 8R29-EA-02I

Changing Coolant
Change coolant according to Scheduled
Maintenance (page 8-3).
For mixture percentage:To change coolant
1. Remove the cooling system cap. •
Use only soft (demineralized) water
in the coolant mixture. Water that
contains minerals will cut down on
the coolant’s effectiveness.
•
Don’t add only water. Always add a
proper coolant mixture.
•
The engine has aluminum parts and
must be protected by an ethylene-
glycol-based coolant to prevent
corrosion and freezing.
•
DO NOT USE alcohol or methanol
antifreeze. DO NOT MIX alcohol
or methanol with the coolant. This
could damage the cooling system.
•
Don’t use a solution that contains
more than 60 % antifreeze.
This would reduce effectiveness.
ProtectionVo l u m e
Antifreeze
solutionWa t e r
Above
−16
°C (3
°F) 35% 65%
Above
−26
°C (
−15
°F) 45% 55%
Above
−40
°C (
−40
°F) 55% 45%
CAUTIONRemoving the Cooling System Cap:Removing the cooling system cap or
drain plug while the engine is
running or hot is dangerous. This
might lead to cooling system and
engine damage and could result in
serious injury from escaping hot
coolant or steam. Turn off the engine
and wait until it’s cool. Even then, be
very careful when removing the cap
or drain plug. Wrap a thick cloth
around it and slowly turn it
counterclockwise to the first stop.
Step back while the pressure escapes.
When you’re sure all the pressure is
gone, press down on the cap — still
using a cloth — turn the cap, and
remove it.
WARNING
Loosen
Tighten
Loosen Tighten 2.3-liter engine
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8-15
Maintenance and Care
Owner Maintenance
Form No. 8R29-EA-02I
2. Only when the engine is cool, remove
the radiator drain plug and drain the
coolant into a suitable container.
Properly dispose of the used coolant.
3. Flush out the system with running
water.
4. Drain the system completely. Insert
and tighten the plug. Add as much
ethylene-glycol-based coolant and
water as necessary to provide freezing
and corrosion protection.
5. In extremely cold climates, add the
amount recommended in the coolant
manufacturer’s instructions.
6. Run the engine at idle with the cooling
system cap off. Slowly add additional
coolant if necessary.
7. At this point, wait until the engine
reaches normal operating temperature;
then depress the accelerator two or
three times. Add more coolant, if
necessary, until the system is full.
8. Install the cooling system cap. Inspect
all connections for leaks. Inspect the
level in the coolant reservoir one more
time.

Inspecting Brake/Clutch Fluid
Level
The brakes and clutch draw fluid from the
same reservoir.
Inspect the fluid level in the reservoir
regularly. It should be kept at MAX.
The level normally drops with
accumulated distance, a condition
associated with wear of brake and clutch
linings. If it is excessively low, have the
brake/clutch system inspected by an
Authorized Mazda Dealer.
Loosen
Tighten
Loosen Tighten
3.0-liter engine
Brake/Clutch Fluid
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