VolvoS901998Overview/volvo/s90/1998/base/

1998 Volvo S90

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1998 S90.

Body PASSENGER CARTransmission Automatic 4-spd

The 1998 Volvo S90 is a passenger‑car that utilizes a 6.1‑quart engine with recommended oil viscosities of 15W‑40, 10W‑30 or 5W‑30 API and is paired with an automatic four‑speed transmission, achieving EPA fuel‑economy ratings of 16/23/18 mpg. In its debut year the model recorded 39 owner complaints, all concentrated on service brakes and hydraulic systems, and it logged no recalls. The complaint history for the model spans 1997 to 2016, with 1998 representing the peak at 39 complaints and 1999 dropping to just one, indicating that the 1998 S90 sits at the high‑end of reliability concerns for the line.

Model year202520242023202220212020201920181998

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity6.1 qtOEM · verified
Engine oil type15W-40 / 10W-30 / 5W-30 APIOEM · verified
Lug nut torque63 ft-lbsOEM · verified
EPA fuel economy16/23/18 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 48 · 600 CCA battery, OE oil filter 3517857. Note the factory front wiper blades is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 48 · 600 CCAOEM · verified
Tire size195-65HR15: WagonOEM · verified
Wheel / rim6.5, 7-J inOEM · verified

OE service part numbers OEM · verified

Engine oil filter3517857
Engine air filter9161033
Fuel filter30671182
Front wiper blades274384 discontinued
Serpentine belt9458411
Thermostat271664 alt 6842214

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length191.7 in
Overall width68.9 in
Overall height55.9 in
Wheelbase109.1 in
Curb weight3461 lb
Track (front / rear)59.1 / 59.8 in
Weight distribution (front / rear)60/40

Ratings & economy EPA / vPIC

EPA city / highway / combined16 / 23 / 18 mpg
DrivetrainRear-Wheel Drive
Passenger volume91 cu ft
Cargo volume16 cu ft
Recommended fuelPremium Gasoline

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 6.1 qt of 15W-40 / 10W-30 / 5W-30 API engine oil, DOT 4 brake fluid. Torque lug nuts to 63 ft-lbs, the oil drain plug to 29.0 ft-lbs. The firing order is 1-5-3-6-2-4.

Lubricants & capacities

Brake FluidDOT 4
Engine Oil15W-40 · API · 10W-30 · 5W-30
Engine Oil Capacity6.1 qt
Power Steering FluidATF

Engine torques

Intake Manifold to Engine Bolts14 ft-lbs
Exhaust Manifold to Cylinder Head Bolts17 ft-lbs
Engine Oil Pan Drain Plug29.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs7 ft-lbs

Chassis torques

Lug Nuts63 ft-lbs

Ignition

Cylinder Firing Order1-5-3-6-2-4
Curb Idle Speed (No Load)750 rpm
Curb Idle Speed Variance (No Load)50 rpm
Spark Plug Gap0.027 in
Spark Plug Torque22.0 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.98 lbs
Oil CapacitySanden SD 709 and SD 7H15 compressors, 8.11; Seiko-Seiki SS 121 DS5 compressor, 7.44; Zexel DKS 15CH compressor, 6.76. oz
Standard BCI Group Number48
Standard BCI Cranking Performance600 cca

Service checks

Pressure Test22 psi
Radiator Cap Pressure Relief22 psi
Thermostat Opening Temperature188 °F
RPM43.0 rpm
Injector Primary Resistance15.5-16.3 ohms
Engine Oil Pressure14.5 psi @ 750 rpm, 50.76 psi @ 4000

Brakes

Brake ApplicationWITH ABS / WITHOUT ABS
Torque Caliper to Bracket25 ft-lbs
Torque to Knuckle74 ft-lbs / 43 ft-lbs
OtherWITH MULTI LINK SUSPENSION / WITH LIVE AXLE
Brake ApplicationWITH ABS / WITHOUT ABS
Rotor Max Parallel Variation0.0003 in / 0.0005 in
Rotor Runout Limit0.0014 in / 0.0016 in / 0.002 in
Rotor Nominal Thickness From1.024 in / 0.866 in / 0.394 in / 0.378 in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
115 ft. lbs, Step 2: 9015 ft. lbs
Engine Flywheel Bolts — tightening sequence 1 stages
133 ft. lbs., Step 2: 6533 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter at 5,000 mi; spark plugs every 30,000 mi; coolant at 5,000 mi. The big-interval services (at 5,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

At 5,000 miBrake Hydraulic System (inspect fluid level) · Engine Coolant System (leak inspection) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Power Steering System (inspect)
Every 10,000 miBattery (inspect electrolyte level) · Body Latches, Locks & Hinges (inspect) · Brake Hydraulic System (inspect fluid level) · Brake System (inspect) · Clutch Pedal Assembly (inspect) · Differential (inspect fluid level)
Every 20,000 miCabin Air Filter (replace) · Driveshaft Support Bearing (inspect) · EGR System (inspect) · Steering Gear Box Assembly (inspect) · Suspension Shock or Strut (inspect)
Every 30,000 miBrake Hydraulic System (drain, refill & bleed) · Engine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Spark Plugs (replace)
At 60,000 miEGR System (inspect)
Every 60,000 miAccessory Drive Belt (inspect) · PCV System (inspect)
Every 70,000 miTiming Belt (replace)
At 105,000 miFuel Filter (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

In 1998 the Volvo S90 saw 39 complaints—significantly higher than the 8 complaints in 1997 and the 1 complaint in 1999—yet it still had no recalls, a single investigation, and 140 total safety bulletins. The complaint count peaks at 1998 before dropping sharply the following year, indicating a transient spike rather than a sustained trend. The top complaint categories that year were Service Brakes (Hydraulic) with 8 complaints, followed by Visibility, Vehicle Speed Control, and Structure, each with four or fewer complaints. Crash‑related complaints were 5, while no fire complaints were reported. Overall, 1998 sits at the apex of the complaint curve for this generation but is isolated from any recall activity, suggesting that the issues were largely isolated and addressed by bulletins. For a used‑car buyer, 1998 is a reasonable year to consider, provided that the specific brake and visibility concerns have been resolved.

0
Open recalls
NHTSA campaigns
140
Service bulletins
Manufacturer communications
1
ODI investigations
Office of Defects Investigation
39
Owner complaints
5 involved a crash · 0 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Rollover★★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 39 complaints on record, top 8 components.

Service Brakes, Hydraulic8
Visibility5
Vehicle Speed Control4
Structure4
Power Train3
Tires2
Air Bags2
Equipment2

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

Technical service bulletins NHTSA · verified

Showing 5 of 140 bulletins on record with NHTSA.

BulletinDateComponentSummary
C000092023-07-21Unknown Or OtherCOMPLIMENTARY UPGRADE C00009 DESCRIPTION.
TJ36563302023-06-12Unknown Or OtherRubber cushion
Special Tools Bu2022-05-12Unknown Or OtherThe Deutronic DBL-1200 is an advanced battery maintainer/charger with the flexibility to…
Service Manager2022-05-06EquipmentICUP/Google Built-In Diagnostic Operations
356EN012022-02-09EquipmentVIDA QR Scanner Mobile App

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific S90. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 1998 S90 take?

6.1 qt of ABOVE 0 degrees F: 15W-40 API, -4 degrees F TO 104 degrees F: 10W-30 API, BELOW 68 degrees F: 5W-30 API, per the factory manual.

Does the 1998 S90 have open recalls?

NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the S90 get?

EPA figures are 16 city / 23 highway / 18 combined mpg.