Page 121 of 175

1998 Volvo S90
extreme operating conditions such as trailer
towing in sustained ambient temperatures over
104° F (40° C). However, SAE 10W-30 synthetic
oil would be a better alternative in such
conditions.
SAE 15W-40 should not be used under normal
operating conditions.
American Petroleum Institute
(API) labels. These labels certify
the oil conforms to the applicable
standards and specifications of
the API.
Servicing pg. 110
Torque exhaust and
intake manifold nuts
A loose manifold could alter air/
fuel ratio and cause an increase
in emissions and/or poor
driveability.
Air cleaner
Replace the air cleaner cartridge
with a new one every 30,000
miles (48,000 km). The
cartridge should be replaced
more often when driving under
dirty and dusty conditions, The
filter cannot be cleaned and,
therefore, should always be
replaced with a new one.
Vacuum fittings, hoses
and connections
Unstable idle, misfiring, or poor
emission control is often caused
by leaking vacuum hoses or
connections. Check hoses and
connections on distributor
vacuum unit, connections on
heater control servo systems and
hydraulic brake servo.
Fuel system cap, tank
and lines, and
connections
The effectiveness of the fuel
system to contain hydrocarbons
is dependent largely on a
leakfree system. Check for
proper sealing of gasoline filler
cap which contains "O" ring-
type seals. Check all
evaporative hoses in vehicle for
tightness. Check fuel lines under
vehicle and repair if necessary.
Fuel (line) filter
The fuel line filter is located
next to the fuel pump. This filter
should be replaced every
100,000 miles (160,000 km).
The filter is replaced as one
complete unit.
Replace more frequently if
contaminated fuel is introduced
into the tank (or if there is
reason to suspect that this has
occurred).
Timing belt
WARNING!
The distributor ignition
system operates at very high
voltages. Special safety
precautions must be followed
to prevent injury.
Always turn the ignition off
when:
l Replacing distributor
ignition components e.g.
plugs, coil, etc.
l Do not touch any part of
the distributor ignition system
while the engine is running.
This may result in unintended
movements and body injury.
Replacing spark plugs
The spark plugs should be
changed every 30,000 miles
(48,000 km). However, city
driving or fast highway driving
may necessitate changing after
15,000 miles (24,000 km) of
driving. When installing new
plugs, be sure to fit the right type
file:///K|/ownersdocs/1998/1998_SV90/98S90_108.htm (3 of 6)12/30/2006 \
1:52:49 PM
Page 126 of 175

1998 Volvo S90
No. Lubricating hint / Lubricant
1 Hood lock and latch / Oil
2 Hood hinges / Oil
3 Door stop and hinges / Oil
4 Sun roof wind deflector / Oil
Sun roof mechanism / Grease
5 Door lock catch plate / Oil
6 Trunk lid lock / Low temperature
keyhole and hinges / grease
No. Lubricating hint / Lubricant
7 Window regulator/ Oil, grease
locking device low temperature
(on inside of door) / grease
8 Front seat slide rail
and latch / Oil
9 Door lock keyhole / Low temperature grease or Volvo Teflon lock spray \
To avoid rattles and unnecessary wear, the body should be lubricated at \
regular service intervals. This should be done by
an authorized Volvo retailer.
Brake fluid, Power steering fluid pg. 116
Brake fluid reservoir
Power steering fluid
The fluid level should lie between the MIN and MAX on the
side of the dipstick. The space between the marks
corresponds to 0.2 US qts/liters.
Fluid type: ATF
Replace: no fluid change required.Brake fluid
The fluid level should be between the MIN and MAX
marks.
Fluid type: DOT 4+
Replace*: every second year or 30,000 miles (48,000
km). The brake fluid should be replaced once a year or
every 15,000 miles (25,000 km) when driving under
extremely severe conditions (mountain driving, hot
climate, high humidity etc.)
file:///K|/ownersdocs/1998/1998_SV90/98S90_114.htm (2 of 5)12/30/2006 \
1:52:50 PM
Page 131 of 175

1998 Volvo S90
Oil quality
Meeting API specification SG, SG/CD, SH or
Energy Conserving (EC) II
For best fuel economy and engine protection,
consult with your authorized Volvo retailer for
recommended oils. Oil with a different quality
rating may not provide adequate engine
protection.
Synthetic oils complying with oil quality
requirements are recommended for: driving in
areas of sustained temperature extremes (hot or
cold), when towing a trailer over long distances or
for prolonged driving in mountainous areas.
Extra oil additives must not be used unless
advised by an authorized Volvo retailer.
NOTE:SAE 15W/40 should only be used in
extreme operating conditions such as trailer
towing in sustained ambient temperatures over
104° F (40° C). However, SAE 10W-30 synthetic
oil would be a better alternative in such
conditions.
SAE 15W-40 should not be used under normal
operating conditions.
Capacity (including filter): 5.9 US qts = 5.75
liters
Automatic transmission
fluid Quality:ATF Dexron
IIE/III and Mercon
Capacity:7.9 US qts. (7.5 liters)
Rear axle oil Quality: API-GL-5
(MIL-L-2105 C or D)
SAE 80W-90Capacity:1.4 US qts (1.3 liters) sedans/
wagons
Power steering fluid Quality: ATF F,GCapacity:1.05 US qts. (1.0 liters)
Brake fluid Brake fluid type:DOT 4
+Capacity: 0.63 US qt. (0.6 liter)
All specifications are subject to change without notice.
Specifications pg. 123
file:///K|/ownersdocs/1998/1998_SV90/98S90_121.htm (2 of 4)12/30/2006 \
1:52:50 PM
Page 169 of 175

1998 Volvo S90
Chapter 10 - (cont.)
Audio systems, general information
pg. 161
Cassettes
l Store cassettes in their cases.
l Do not touch the tape surface
with your fingers.
l Tapes should not be exposed to
direct sunlight or extreme
temperatures.
l Keep tapes away from oil,
grease and other contaminants.
l For optimal tape deck
performance Volvo does not
recommend the use of C-120
tapes.
l Take up slack using a pen or a
pencil before inserting a cassette
in the cassette slot.
Cassette cleaning
We recommend the use of the
Volvo Cleaning Cassette available
as a genuine Volvo accessory.
Regular use improves sound
quality, cleans vital parts and
prevents tape tangle. Compact disc care
l Before using a new disk for the
first time, remove any burrs in the
center/outer edge by running the
stem of a pen or similar object
around the hole/edge of the disc.
l Use high quality discs only.
l Keep the discs clean. Wipe
them with a soft, clean, lint-free
cloth, working from the center
outwards. If necessary, dampen
the cloth with a neutral soap
solution. Dry thoroughly before
using.
l Never use cleaning spray or
antistatic liquid. Use only cleaners
specifically made for CD's.
l Use discs of the correct size
only (3.5" discs should never be
used).
l Do not put tape or labels on the
disc itself.
l Volvo does not recommend the
use of plastic outer rings on the
disc.
l Condensation may occur on
discs/optical components of the
changer in cold winter weather.
The disc can be dried with a clean,
lint-free cloth. Optical
components in the CD changer
may, however, take up to one hour
to dry off.
l Never attempt to play a disc
which is damaged in any way.
l When not in use, the discs
should be stored in their covers.
Avoid storing discs in excessive
heat, direct sunlight or dusty
file:///K|/ownersdocs/1998/1998_SV90/98S90_161.htm (1 of 7)12/30/2006 \
1:52:56 PM