1998 Volvo S90
Volvo allows the use of the
following "oxygenated fuels";
however, the octane ratings
listed on this page must still be
met. of fuel. Therefore, it is
advisable to refuel as soon as
possible when the needle nears
the red zone, or when the fuel
warning light comes on.
Driving economy pg. 56
Economical driving
conserves natural
resources
Better driving economy may be
obtained by thinking ahead,
avoiding rapid starts and stops
and adjusting the speed of your
vehicle to immediate traffic
conditions. Observe the
following rules:
l Bring the engine to normal
operating temperature as soon
as possible by driving with a
light foot on the accelerator
pedal for the first few minutes
of operation. A cold engine
uses more fuel and is subject to
increased wear.
l Whenever possible, avoid
using the car for driving short
distances. This does not allow
the engine to reach normal
operating temperature.
l Drive carefully and avoid
rapid acceleration and hard
braking.
l Do not exceed speed limit.
l Avoid carrying unnecessary
items (extra load) in the car.
l Check tire pressure regularly
l Remove snow tires when
threat of snow or ice has ended.
l Note that roof racks, ski
racks, etc., increase air
resistance and thereby fuel
consumption.
l Avoid using automatic
transmission kick-down feature
unless necessary.
l Avoid using the air
conditioning when it is not
required. When engaged, the
air conditioner's compressor
places places an additional load
on the engine. However, please
note that fuel consumption is
lower with the air conditioning
on than it is when driving with
the air conditioning switched
off and the windows down.
Other factors which decrease
gas mileage are:
l Worn or dirty spark plugs
l Incorrect spark plug gap
l Dirty air cleaner
l Dirty engine oil and clogged
oil filter
l Dragging brakes
l Incorrect front end alignment
Some of the above mentioned
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1998 Volvo S90
Maintenance schedule
A= Adjust (Correct if necessary) I= Inspect (Correct or Replace if ne\
cessary)
R= Replace L= Lubricate
Maintenance Operation thousand
miles
(thousand km) 5
(8)
10
(16) 15
(25) 20
(32) 25
(40) 30
(48) 35
(56) 40
(64) 45
(72) 50
(80) 55
(88) 60
(96)
EMISSION SYSTEM
MAINTENANCE
Engine oil and filter R R R R R R R R R R R R
Engine drive belt (accessory belt) I R
Air cleaner filter R R
Spark plugs R R
Automatic transmission fluid I I I I I I
Timing belt - B 6304 S
4
1) See section "Engine oil" for detailed information.
NOTE: The oil should be changed at these intervals or after 750 hours of\
driving or after 12 months
which ever occurs first. See "Service Reminder indicator", page 19.
2) For services beyond 60,000 miles (96,000 km), consult your "Mainte\
nance Records booklet".
3) These intervals may apply, depending on actual driving conditions (\
see page 109 for details)
4) For proper functioning of the vehicle and its emission control syste\
m, Volvo recommends that the
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1998 Volvo S90
Chapter 8 - (cont.)Engine oil
pg. 108
Checking the oil level
The oil level should be checked every
time the car is refuelled. This is
especially important during the engine
break-in period (up to the first service).
CAUTION: Not checking the oil level
regularly can result in serious engine
damage if the oil becomes too low.
Be sure the oil level is maintained between
the upper and lower marks on the dipstick.
Low oil level can cause internal damage to
the engine and over-filling can result in
high oil consumption. The distance
between the dipstick marks represents
approx. 1 US qt (1 liter) of oil. Before
checking the oil level after the car has been
driven, park the car on a level surface and
wait at least 5 minutes after the engine has
been switched off. The oil level should be
halfway between the MIN and MAX
marks.
If the oil is checked before the car is driven
(engine completely cold) the oil level
should be at the MAX mark.
NOTE: The engine must be stopped when
checking the oil.
Draining the oil
Drain the oil after driving while it is still
warm.
WARNING! The oil may be very
hot.
To add or change engine oil
Add oil of the same kind as already used.
Capacity (including filter): 5.9 US qts = 5.75 liters
Changing oil filter
Replace the oil filter at every oil change
WARNING! Oil spilled on a hot exhaust pipe
constitutes a fire risk.
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1998 Volvo S90
If you change the engine oil and filter
yourself, your Volvo retailer can assist you
in disposing of the used oil. Engine oil can
be harmful to your skin - gloves should
worn when performing this work.
Engine oil pg. 109
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. Oils with a different quality
rating may not provide adequate engine
protection.
Viscosity (stable ambient
temperatures):
Do not use oils with other viscosity ratings. The
use of incorrect viscosity oil can shorten engine
life.
Volvo recommends the use of energy-conserving
oils. Look for the API label. 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
Changing oil and oil filter
Oil and oil filter changes should be made as
specified in the following table:
If driving conditions
include: Then the correct oil/oil
filter change interval
is:
l Extended periods of
idling and/or low-
speeds operation
l Frequent short trips
(less than 7 miles = 11
km)
l Extended periods of
driving in dusty and/or
sandy areas
l Trailer towing
l Driving in
mountainous areas EVERY 6 MONTHS
OR EVERY
5,000 miles= 8,000 km
WHICHEVER
COMES FIRST
l Primarily highway
driving
l Frequent trips of
longer than 7 miles =
11 km EVERY 12 MONTHS
OR EVERY
10,000 miles = 16,000
km
WHICHEVER
COMES FIRST
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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
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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
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1998 Volvo S90
Engine
Liquid-cooled, gasoline, 6-
cylinder, in-line engine.
Aluminum alloy cylinder
block with cast-iron cylinder
liners cast directly into block.
Aluminum alloy cylinder head
with double overhead
camshafts and separate intake
and outlet channels.
Engine lubrication is provided
by an eccentric pump driven
from the crankshaft. Full-flow
type oil filter. Exhaust
emission control
accomplished by fuel
injection, heated oxygen
sensors and three-way
catalytic converter.
Type designation
Output (SAE J 1349)
Max. torque (SAE J 1349) at
rpm
Number of cylinders
Bore
Stroke
Displacement
Compression ratio
Valve clearance:Volvo B 6304 S
181 hp at 5200 rpm
(135 kW at 73 rps)
199 ft. lbs. (274 Nm) at 4100
rpm
6
3.27" (83 mm)
3.54" (90 mm)
2.92 liters
10.7:1
Self-adjusting
All specifications are subject
to change without notice.
Specifications (cont.) pg. 124
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1998 Volvo S90
Ashtray rear 1.2 W Volvo P/
N966326 1
Seat belt lock 1.2 W Volvo P/
N966326 1
Instrument
warning/
indicator lights 1.2 W Volvo P/
N966326 –
All specifications are subject to change without
notice
Specifications pg. 127
Vehicle Loading
The tires on your Volvo should perform to
specifications at all normal loads when inflated as
recommended on the tire information label. The
label is located on the rear-facing edge of the
right-front door. This label lists both tire and
vehicle design limits. Do not load your car beyond
the load limits indicated.
WARNING!
Improperly inflated tire will reduce tire life,
adversely affect vehicle handling and can possibly
lead to failure resulting in loss of vehicle control
without prior warning.
Capacities
Fuel tank (approx.) 21.1 US gal.*
80 liters
Cooling System 10.5 US qts.
(10 liters)
Engine 5.9 US qts. **
at oil change 5.75 liters
Engine, 5.5 US qts. **
excl. oil filter 5.15 liters
Automatic transmission 7.9 US qts.
7.5 liters
Rear axle 1.4 US qts.
1.3 liters
Power steering gear 0.8 US qts.
0.8 liter
*"Usable" capacity - 20.3 US gallons (77 liters)
** if oil cooler is drained, add 0.47 US qts (0.4
liter)
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