MAZDA MODEL RX 8 2004 Owners Manual (in English)
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Maintenance and Care
Form No. 8R65-EA-03C
Owner Maintenance
The owner or a qualified service technician should make these vehicle inspections at the 
indicated intervals to ensure safe and dependable operation.
Bring any problem to the attention of an Authorized Mazda Dealer or qualified service 
technician as soon as possible.
When Refueling
•Brake and clutch fluid level (page 8-14)
•Engine coolant level (page 8-12)
•Engine oil level (page 8-10)
•Washer fluid level (page 8-17)
At Least Monthly
•Tire inflation pressures (page 8-23)
At Least Twice a Year (For Example, Every Spring and Fall)
•Automatic transmission fluid level (page 8-15)
You can do the following scheduled maintenance items if you have some mechanical 
ability and a few basic tools and if you closely follow the directions in this manual.
•Air filter (page 8-18)
•Engine coolant (page 8-12)
•Engine oil (page 8-10)
Owner Maintenance Schedule
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Owner Maintenance
Form No. 8R65-EA-03C
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 procedures. 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 which may turn on unexpectedly.
Electrical Fan and Engine Inspection:
Working near the electrical cooling fan when it is running is dangerous. You could be 
hit by the fan and seriously injured. Turn off the ignition switch and make sure the 
fan is not running before attempting to work near the electrical cooling fan.
NOTE
Once the engine coolant exceeds a preset temperature, an electrical cooling fan turns on. 
It will continue running for about 10 minutes after the ignition switch is turned to off.
WARNING
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Maintenance and Care
Owner Maintenance
Form No. 8R65-EA-03C
Engine Compartment Overview
Automatic transmission fluid-level dipstick
(only for automatic transmission)
Windshield washer 
fluid reservoir
Fuse block
(next to air filter)
BatteryBrake/Clutch fluid 
reservoir Engine oil dipstick Engine oil-filler cap
Air filter Engine coolant reservoir Cooling system cap
Fuse block
(near battery)
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Owner Maintenance
Form No. 8R65-EA-03C
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.
Engine Oil
NOTE
The Mazda RX-8 requires regular 
inspection of the engine oil level. The 
compact, high performance RENESIS 
rotary engine in your vehicle consumes 
a small amount of engine oil due to its 
structural design.
Although your vehicle is equipped 
with an engine oil level warning light 
and an engine oil pressure gauge, it is 
best to keep the engine oil level in the 
range between full and low by 
checking the oil dipstick regularly.
Inspect the level when refueling.
FORGASOLINEENGINES
(ILSAC)
Using oils of viscosity besides those 
recommended for specific temperature 
ranges could result in engine damage.
–30–20–100 1020304050
–20 0 20 40 60 80 100 120
5W-20
CAUTION
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Maintenance and Care
Owner Maintenance
Form No. 8R65-EA-03C
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.
5. Pull it out again and examine the level.
It’s OK between L and F.
But if it’s near or below L, add enough 
oil to bring the level to F.
The distance between L and F on the 
dipstick represents the following:
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.
Changing engine oil
Don’t add engine oil over F. This may 
cause engine damage.
L (US qt, Imp qt) 1.7 (1.8, 1.5)
Full
Low OK
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.
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
WARNING
08.fm  Page 10  Friday, July 4, 2003  11:45 AM 
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Maintenance and Care
Owner Maintenance
Form No. 8R65-EA-03C
1. Remove the engine cover.
2. Warm up the engine for a few minutes 
and turn it off. Remove the oil-filler 
cap.
3. Remove the drain plug and drain the oil 
into a suitable container.
4. Replace the plug tightly after the oil 
has thoroughly drained.
5. Fill the engine with new oil to the F 
mark on the dipstick.
6. Securely replace the oil-filler cap.
7. Start the engine and inspect around the 
drain plug for leaks.8. Turn it off and wait 5 minutes for the 
oil to return to the oil pan.
Check the oil level and fill to the F 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.
Engine cover
LoosenTighten
Front
Drain Plug
NOTE
•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 
10-5).
•Verify that the engine cover is 
securely installed.
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Form No. 8R65-EA-03C
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 F and L marks 
on the coolant reservoir when the engine 
is cool.
If it’s at or near L, add enough coolant to 
the coolant reservoir to provide freezing 
and corrosion protection and to bring the 
level to 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. Carefully 
inspect the engine coolant in the 
coolant reservoir, but do not open it. 
Do not use a match or live flame in 
the engine compartment. DO NOT 
ADD COOLANT WHEN THE 
ENGINE IS HOT.
WARNING
Radiator coolant will damage paint.
Rinse it off quickly.
CAUTION
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Maintenance and Care
Owner Maintenance
Form No. 8R65-EA-03C
Changing Coolant
Change coolant according to Scheduled 
Maintenance (page 8-3).
For mixture percentage:To change coolant
1. Remove the cooling system cap.
2. Only when the engine is cool, loosen 
the radiator drain plug and drain the 
coolant into a suitable container. 
Properly dispose of the used coolant. •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
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Owner Maintenance
Form No. 8R65-EA-03C
3. With the drain plug loose but not fully 
removed, flush out the system with 
running water.
4. Drain the system completely and 
retighten 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. Reinstall the cooling system cap.
7. Run the engine at idle for about 
10 minutes, then turn it off. If the 
coolant level warning light comes on 
during this time, turn the engine off.
After turning off the engine, inspect 
the drain plug and the water hoses for 
leaks.
8. After the engine has cooled, remove 
the cooling system cap and inspect the 
coolant level. If it’s low, repeat steps 5 
to 7.
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.
NOTE
Because this procedure requires 
technical expertise, we recommend 
that it be done by an Authorized 
Mazda Dealer.
Tighten Loosen Loosen
Tighten
Cooling system cap
Drain plug
Brake/Clutch Fluid
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Maintenance and Care
Owner Maintenance
Form No. 8R65-EA-03C
Adding Brake/Clutch Fluid
If the fluid level is low, add fluid until it 
reaches MAX.
Before adding fluid, thoroughly clean the 
area around the cap.
Inspecting Automatic 
Transmission Fluid Level
The automatic transmission fluid level 
should be inspected regularly. Measure it 
as described below.
The volume of fluid changes with the 
temperature. Fluid must be checked at idle 
without driving at normal operating 
temperature.
1. Park on a level surface and set the 
parking brake firmly.
2. Idle the engine about two minutes.
Push down on the brake pedal.
3. Move the shift lever through all ranges 
and set it at P.
Spilled Brake Fluid:
Spilled brake fluid is dangerous. If it 
gets in your eyes, they could be 
seriously injured. If this happens, 
immediately flush your eyes with 
water and get medical attention. 
Brake fluid spilled on a hot engine 
could cause a fire. Be careful not to 
spill brake fluid on yourself or on the 
engine.
Low Brake/Clutch Fluid Levels:
Low brake/clutch fluid levels are 
dangerous. Low levels could signal 
brake lining wear or a brake system 
leak. Your brakes could fail and cause 
an accident. If you find a low fluid 
level, have the brakes and clutch 
inspected.
•Brake and clutch fluid will damage 
painted surfaces. If brake or clutch 
fluid does get on a painted surface, 
wipe it off immediately.
•
Using nonspecified brake and clutch 
fluids (page 10-5) will damage the 
systems. Mixing different fluids will 
also damage them.
If the brake/clutch system frequently 
requires new fluid, consult an 
Authorized Mazda Dealer.
WARNING
CAUTION
Automatic Transmission 
Fluid (ATF)
•Low fluid level causes transmission 
slippage. Overfilling can cause 
foaming, loss of fluid, and 
transmission malfunction.
•Use specified fluid (page 10-5). A 
nonspecified fluid could result in 
transmission malfunction and 
failure.
CAUTION
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