2003 HONDA S2000 ECU

To add oil, unscrew and remove the
engine oil f ill cap on top of the lef t
valve cover. Pour in the oil, and
replace the engine oil f ill cap.
Tighten it securely. Wait a f ew
minutes and recheck the oil level. Do
not f ill above the upper mark; you
could damage the engine.Make sure the API Certif ication Seal
says ‘‘For Gasoline Engines.’’
Pour the oil slowly and caref ully so
you do not spill. Clean up any spills
immediately. Spilled oil could damage components in the engine
compartment.
Oil is major contributor to your
engine’s perf ormance and longevity.
Always use a premium-grade
detergent oil displaying the API
Certif ication Seal. This seal indicates
the oil is energy conserving, and that
it meets the American Petroleum
Institute’s latest requirements. It is
highly recommended that you use
Honda Motor Oil in your vehicle f or
as long as you own it.
CONT INUED
A dding Oil
Recommended Oil
Engine Oil
Maint enance161
API CERTIFICATION SEAL

Remove the reserve tank f rom its
holder by pulling it straight up.
Drain the coolant, then put the
tank back in its holder.When the coolant stops draining,
tightenthedrainplugatthe
bottom of the radiator.
Apply non-hardening sealant to the
drain bolt threads, put a new
washer on the drain bolt, and
reinstall the bolt in the engine
block. Tighten it securely.
Tightening torque:
Loosen the bleeder bolt on top of
the engine, and remove the
bleeder cap near the engine oil f ill
cap.
5. 6.
7.
Cooling Syst em
Maint enance168
RESERVE TANK CAP
HOLDER RESERVE TANK BLEEDER BOLT
61 lbf·ft (83 N·m , 8.5 kgf·m)

The transmission should be drained
and ref illed with new f luid according
to the time and distance recommen-
dations in the maintenance schedule.
Check the f luid level with the
transmission at normal operating
temperature and the car sitting on
level ground. Remove the
transmission f iller bolt and caref ully
f eel inside the bolt hole with your
f inger. The f luid level should be up
to the edge of the bolt hole. If it is
not, add Honda Manual Transmis-
sion Fluid (MTF) until it starts to
run out of the hole. Reinstall the
f iller bolt and tighten it securely. If Honda MTF is not available, you
may use an SAE 10W-30 or 10W-40
viscosity motor oil with the API
Certif ication seal that says ‘‘FOR
GASOLINE ENGINES’’ as a
temporary replacement. However,
motor oil does not contain the proper
additives and continued use can
cause stiffer shifting. Replace as
soon as it is convenient.
Maint enance
6-speed Manual T ransmission Fluid
172
CORRECT LEVEL
FILLER BOLT

Put a new washer on the f iller bolt,
then reinstall the f iller bolt. Tighten
it securely. Tightening torque:
The dif f erential should be drained
and ref illed with new f luid according
to the time and distance
recommendations in the
maintenance schedule.
Check the f luid level with the
dif f erential at normal operating
temperature and the vehicle sitting
on level ground. Remove the
dif f erential f luid f iller bolt and
washer and caref ully f eel inside the
bolt hole with your f inger. The f luid
level should be up to the edge of the
bolt hole. If it is not, slowly add f luid
until it starts to run out of the hole. Use an SAE 90 viscosity hypoid gear
oil, API service classif ied GL5 or
GL6 only, in the dif f erential.
Maint enance
Dif f erential Fluid
173
CORRECT LEVEL
FILLER BOLT
33 lbf·ft (45 N·m , 4.6 kgf·m)

Install the new bulb in the socket.
Testthelightstomakesurethe
new bulb is working. Push the socket into the light
assembly and turn it clockwise
until it locks.Install the trunk lining and secure
it with the fasteners. To reinstall a
f astener, reset the f astener by
pushing on the pointed end until it
pops back almost f lush with the
f ingers on the housing. Put the
f astener in the hole of the trunk
lining and push on the center until
it locks (the center is f lush with
the head).
7.
8.
9.
10.
Lights
Maint enance203

Clean the windows, inside and out,
with a commercially-available glass
cleaner. You can also use a mixture
of one part white vinegar to ten parts
water. This will remove the haze that
builds up on the inside of the
windows. Use a sof t cloth or paper
towels to clean all glass and clear
plastic surf aces.If you use a liquid air f reshener,
make sure you f asten it securely so it
does not spill as you drive. Two f actors normally contribute to
causing corrosion in your car:
Moisture trapped in body cavities.
Dirtandroadsaltthatcollectsin
hollows on the underside of the
car stays damp, promoting
corrosion in that area.
Removal of paint and protective
coatings f rom the exterior and
underside of the car.
If you want to use an air f reshener/
deodorizer in the interior of your car,
it is best to use a solid type. Some
liquid air f resheners contain chemi-
cals that may cause parts of the
interior trim and f abric to crack or
discolor.
If you get any glass cleaner on the
convertible top, immediately spray
the area with water, and dry it with a
sof t cloth. 1.
2.
Windows
A ir Fresheners Corrosion Protection
Int erior Care, Corrosion Prot ect ion
Appearance Care213
The rear window def ogger is bonded to
the inside of the glass. Wiping
vigorously up-and-down can dislodge
and break these wires. When cleaning
therearwindow,usegentlepressure
and wipe side-to-side.

Put on the spare tire. Put the
wheel nuts back on f inger-tight,
then tighten them in a crisscross
pattern with the wheel wrench
until the wheel is f irmly against
the hub. Do not try to tighten
them f ully.Lower the car to the ground and
remove the jack.
Tighten the wheel nuts securely in
the same crisscross pattern. Have
the wheel nut torque checked at
the nearest automotive service
f acility.
Tighten the wheel nuts to:
13.
11. 12.
Changing a Flat T ire
T aking Care of t he Unexpect ed222
80 lbf·ft (108 N·m , 11 kgf·m)

Remove the tool box f rom the
trunk well and replace the jack,
wheel wrench and extension in the
tool box.
Place the tool box into the spare
tire shelf in the trunk.Replacethesparetirecover.
Secure it with the three clips. Push
each clip down securely, and pivot
theringdownflat.
Put the flat tire in the trunk well
vertically as shown.
14.
15.
17.16.
Changing a Flat T ire
T aking Care of t he Unexpect ed223