MitsubishiMontero19902.6L/mitsubishi/montero/1990/2-6l/

1990 Mitsubishi Montero — 2.6L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1990 Montero 2.6L.

Engine 2.6LTransmission Manual 5-spd

The 1990 Mitsubishi Montero, powered by a 2.6L engine and paired with a manual 5-speed transmission, delivers EPA fuel economy of 15 city, 17 highway, and 16 combined mpg while requiring 4.5 quarts of 20W-40, 10W-30, or 5W-30 API oil. Among its 24 total owner complaints, the top issue area is Engine & Engine Cooling, and the model year carries one recall. In the broader Montero reliability history spanning 1990 through 2006—where the highest complaint count is 174 (2002) and the lowest is 1 (2005)—the 1990 model's relatively low complaint volume positions it as a reasonably solid early entry in the lineup, though not the most trouble-free year.

Model year19901989198819871986198519841983

Quick specs

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

Engine oil capacity4.5 qtOEM · verified
Engine oil type20W-40 / 10W-30 / 5W-30 APIOEM · verified
EPA fuel economy15/17/16 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses OE oil filter MZ690116. 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.

Tire size4WD:P225-75R15OEM · verified
Wheel / rim6-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filterMZ690116
Engine air filterMD620090 alt MR571477
Fuel filterMB504752
Spark plugMS851237
Front wiper bladesMB542222
Serpentine belt7814A029 alt MD187462
ThermostatMD972903 alt MD184011

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionManual 5-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined15 / 17 / 16 mpg
Drivetrain4-Wheel or All-Wheel Drive
Recommended fuelRegular Gasoline

Service quick specs OEM factory data

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

This engine holds 4.5 qt of 20W-40 / 10W-30 / 5W-30 API engine oil, 85W-90 · 80W-90 in the differential, DOT 3 · DOT 4 brake fluid.

Lubricants & capacities

Brake FluidDOT 3 · DOT 4
Differential Gear Oil85W-90 · 80W-90
Differential Gear Oil Capacity5.3 Pints,
Engine CoolantETHYLENE GLYCOL
Engine Oil20W-40 · API · 10W-30 · 5W-30
Engine Oil Capacity4.5 qt
Power Steering FluidUse Mitsubishi PS fluid

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 7,500 mi; spark plugs every 60,000 mi.

Every 7,500 miBrake Hydraulic System (inspect fluid level) · Clutch Master Cylinder (inspect fluid level) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Power Steering System (inspect)
Every 15,000 miAxle Shaft Oil Seal (inspect) · Brake Linings (inspect) · CV Joint Boot (inspect) · Suspension Ball Joint (inspect)
Every 30,000 miAccessory Drive Belt (inspect) · Brake System (inspect) · Differential (inspect fluid level) · Drive Axle Assembly (drain & refill) · Driveshaft U-Joint (inspect) · Engine Air Filter Element (replace)
Every 50,000 miEngine Coolant System Hoses (inspect) · Fuel Line (inspect) · Fuel Tank (inspect) · Fuel Tank Filler Cap (inspect)
Every 60,000 miDistributor Cap (inspect) · Distributor Rotor (inspect) · Fuel Evaporative Emission Control System (inspect) · Fuel Evaporative Emission Control System Lines (inspect) · Spark Plug Wires (replace) · Thermostatically Controlled Air Cleaner Assembly (inspect)
Every 80,000 miOxygen Sensor (replace) · PCV System (inspect)
Every 100,000 miFuel Evaporative Canister (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.

The federal record across these model years shows a pronounced escalation in reported activity, with 1990 standing as the earliest year captured and registering the fewest TSBs at just 5. Its 24 complaints and single recall sit far below the generation's later peaks, including 174 complaints and 110 TSBs in 2002, positioning 1990 at the low end of the federal record. Notably, 1990 accounts for 2 investigations, the highest count in this dataset, though the data does not specify their subject; its leading complaint categories are Engine & Engine Cooling with 7 filings and Seat Belts with 6, alongside 2 crash-related and 2 fire-related complaints. Relative to the broader trajectory, 1990 sits at the origin point before complaints, TSBs, and recalls escalate to substantially higher levels in subsequent model years. This positioning suggests the 1990 model year reflects less of the heightened federal activity documented in later years. Given its comparatively restrained federal footprint and minimal recall exposure within this dataset, 1990 represents a comparatively favorable year to buy from a statistical-risk standpoint.

1
Open recalls
NHTSA campaigns
5
Service bulletins
Manufacturer communications
2
ODI investigations
Office of Defects Investigation
24
Owner complaints
2 involved a crash · 2 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 24 complaints on record, top 8 components.

Engine & Engine Cooling7
Seat Belts6
Power Train2
Service Brakes, Hydraulic2
Vehicle Speed Control2
Visibility2
Tires1
Steering1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

95V103004Seat Belts:Front:Buckle AssemblyReported 24/05/1995

THE FRONT SAFETY BELT BUCKLE RELEASE BUTTONS CAN BREAK. THESE RED PLASTIC RELEASE BUTTONS ARE MARKED "PRESS." IF A BUTTON BREAKS, PIECES CAN FALL INTO THE BUCKLE ASSEMBLY CAUSING THE BUCKLE TO OPERATE IMPROPERLY. Remedy: OWNERS SHOULD PROMPTLY CHECK THE CONDITION AND OPERATION OF BOTH FRONT SAFETY BELT BUCKLES AND CAREFULLY INSPECT THE RED RELEASE BUTTON FOR ANY BREAKS OR CRACKS. THEY SHOULD…

Technical service bulletins NHTSA · verified

Showing 5 of 5 bulletins on record with NHTSA.

BulletinDateComponentSummary
TT2532019-11-26EquipmentThis is a service newsletter (Tech Talk) that was sent out to dealers.
TSB-19-00-0082019-07-30EquipmentThis is a Technical Service Bulletin sent to dealers. This bulletin supersedes…
TT2372018-02-26EquipmentThis is a service newsletter (Tech Talk) that was sent out to dealers.
TSB-13-42A-0022013-01-29StructureThis Technical Service Bulletin updates the door adjustment procedure in the Body Section…
TSB97110021997-02-01Engine And Engine CoolingNEW VALVE LASH ADJUSTER NOISE CHECKING AND TROUBLESHOOTING PROCEDURES. *JD

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 Montero. 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 1990 Montero 2.6L take?

4.5 qt of ABOVE 32 degrees F: 20W-40 API, ABOVE -10 degrees F: 10W-30 API, BELOW 60 degrees F 5W-30 API, per the factory manual.

Does the 1990 Montero have open recalls?

NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 2.6L get?

EPA figures are 15 city / 17 highway / 16 combined mpg.