MitsubishiMontero19882.6L/mitsubishi/montero/1988/2-6l/

1988 Mitsubishi Montero — 2.6L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1988 Montero 2.6L.

Engine 2.6LTransmission Automatic 4-spd

Equipped with a 2.6L engine and Automatic 4-spd transmission, the 1988 Mitsubishi Montero 2.6L achieves EPA ratings of 15/16/15 mpg while requiring 4.6 qt of oil in viscosities of 20W-20 / 20W-40 / 20W-50. Ownership records for this specific year show just 1 total owner complaint focused on Engine & Engine Cooling along with 1 recall. While the model's complaint history covers 1990-2006 with a peak of 174 complaints in 2002, the 1988 variant's single report equals the lowest count of 1 recorded in 2005, aligning it with the minimum issue volume observed in the 1990-2006 history range.

Model year19901989198819871986198519841983

Quick specs

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

Engine oil capacity4.6 qtOEM · verified
Engine oil type20W-20 / 20W-40 / 20W-50OEM · verified
EPA fuel economy15/16/15 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 filterMD620047 alt MD603360
Fuel filterMB129591
Spark plugMS851238
Front wiper bladesMB542222
Serpentine beltMZ690294 alt MB239498
ThermostatMD972903 alt MD184011

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined15 / 16 / 15 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 4.6 qt of 20W-20 / 20W-40 / 20W-50 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 Capacity2.3 Pints, Front
Differential Gear Oil85W-90 · 80W-90
Differential Gear Oil Capacity3.2 Pints,
Engine CoolantETHYLENE GLYCOL
Engine OilABOVE 32 degrees F
Engine Oil Capacity4.6 qt

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 miBrake Linings (inspect) · Exhaust System (Complete) (inspect) · Jet Valve (inspect) · Universal Vehicle Operation (inspect idle speed)
Every 30,000 miAccessory Drive Belt (inspect) · Axle Shaft Oil Seal (inspect) · Brake System (inspect) · CV Joint Boot (inspect) · Choke System (inspect) · Differential (inspect fluid level)
Every 50,000 miCarburetor (inspect) · Engine Coolant System Hoses (inspect) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Filter (replace) · Fuel Line (inspect) · Fuel Tank (inspect)
Every 60,000 miAir Injection System (inspect) · Air Injection System Solenoid Control Valve Air (replace) · Distributor Assembly (inspect) · Fuel Evaporative Emission Control System (inspect) · Spark Plug Wires (inspect) · Thermostatically Controlled Air Cleaner Assembly (inspect)
Every 80,000 miOxygen Sensor (replace)
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 1988 Mitsubishi Montero falls outside the provided federal complaint and recall data, which begins in 1990, making direct year-to-year comparisons impossible. However, the available record reveals a clear trend: complaints and recalls for this generation rise sharply in the mid-1990s, peaking in 1995 and 2002, while technical service bulletins (TSBs) escalate steadily from 1992 onward. The lone 1988 complaint—an engine-related issue—suggests potential early powertrain concerns, though the absence of crash or fire reports is notable. Without recall data for 1988, it’s difficult to assess whether systemic issues were addressed proactively, but the later surge in recalls implies latent problems may have emerged as the model aged. Given the lack of federal red flags for 1988 specifically, this year appears relatively unburdened by the generation’s later reliability challenges. **Takeaway: The 1988 Montero is a reasonable choice within this generation, provided a pre-purchase inspection confirms no unresolved engine or cooling system defects.**

1
Open recalls
NHTSA campaigns
5
Service bulletins
Manufacturer communications
1
ODI investigations
Office of Defects Investigation
1
Owner complaints
0 involved a crash · 0 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 1 complaints on record, top 1 components.

Engine & Engine Cooling1

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…
TSB97110031997-05-01Unknown Or OtherVALVE LASH ADJUSTER PROCEDURES - SERVICE MANUAL REVISION. *TW

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 1988 Montero 2.6L take?

4.6 qt of ABOVE 32 degrees F: 20W-20, 20W-40, 20W-50, ABOVE -10 degrees F: 10W-30, 10W-40, 10W-50, BELOW 60 degrees F: 5W-20, 5W-30, 5W-40, per the factory manual.

Does the 1988 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 / 16 highway / 15 combined mpg.