MitsubishiMontero19913.0L/mitsubishi/montero/1991/3-0l/

1991 Mitsubishi Montero — 3.0L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1991 Montero 3.0L.

Engine 3.0LTransmission Automatic 4-spd

The 1991 Mitsubishi Montero 3.0L enters the model’s 1990–2006 production span with a 3.0-liter engine paired to a four-speed automatic transmission, carrying a 4.5-quart oil capacity specified for 20W-40, 10W-30, or 5W-30 API viscosities and EPA ratings of 15/17/15 mpg. Against the broader timeline, its record of 18 total owner complaints and two recalls sits well below the 174-complaint peak observed in 2002, yet remains above the single complaint logged for 2005, placing this model year among the less troublesome early examples despite engine and cooling systems drawing the highest concentration of reported issues.

Model year199719961995199419931992199119901989

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 economy15/17/15 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 filterMD620090 alt MR571477
Fuel filterMB504752
Spark plugMS851237
Front wiper bladesMB542222
Serpentine beltMD187462 alt MD185960
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 / 17 / 15 mpg
Drivetrain4-Wheel or All-Wheel Drive
Recommended fuelRegular Gasoline

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent published road-test results.

13.4 sec0–60 mph (tested)quickest 13.40 sec — 1991 LS
141 hpHorsepower (as tested)
172 lb-ftTorque (as tested)
YearTrim / engine0–60¼ mileHPDrivetrain
1991LS 3.0L V613.40 sec19.20 sec141 hp4x4
1992SR 3.0L V612.20 sec18.80 sec150 hp4x4
1992SR 3.0L V614.40 sec19.90 sec150 hp4x4
1989LS 3.0L V611.66 sec18.78 sec143 hp4x4
1989LS 3.0L V613.00 sec19.00 sec143 hp4x4

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) · Spark Plugs (replace)
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 1991 Mitsubishi Montero sits at the quieter end of this generation's federal record, with 18 complaints, 2 recalls, and 1 investigation — a modest improvement over the 1990 launch year's 24 complaints and 2 investigations, and notably calmer than what followed. Complaint volumes dip to 12 in 1992 before climbing steadily through the mid-1990s, peaking at 99 in 1995 and 98 in 1997, and ultimately spiking to 174 by 2002, while TSBs balloon from single digits in the early years to 110 by 2002 — suggesting that issues accumulated and were addressed progressively over the generation's life. The 1991 model's top complaint areas — Engine & Engine Cooling (4), Steering (2), Tires (2), and Vehicle Speed Control (2) — are modest in volume, though the 2 fire complaints warrant attention; the data does not specify root causes for any of these. Crucially, the 1991 falls before the generation's trouble arc intensifies around 1994, meaning it benefits from early-production simplicity without yet bearing the escalating complaint and recall burden seen in later years. For a used buyer, 1991 represents one of the more defensible model years in this generation — complaint volume is among the lowest on record, recalls are manageable, and it predates the major problem clusters that define the generation's later years.

2
Open recalls
NHTSA campaigns
6
Service bulletins
Manufacturer communications
1
ODI investigations
Office of Defects Investigation
18
Owner complaints
0 involved a crash · 2 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 18 complaints on record, top 8 components.

Engine & Engine Cooling4
Steering2
Tires2
Vehicle Speed Control2
Service Brakes, Hydraulic,Engine & Engine Cooling1
Engine & Engine Cooling,Tires1
Steering,Engine & Engine Cooling1
Unknown Or Other1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 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…

93E023000Trailer HitchesReported 22/07/1993

THE WELD ON THE RECEIVER UNIT OF THE TRAILER HITCH CAN BREAK. Remedy: REPLACE THE TRAILER HITCH.

Technical service bulletins NHTSA · verified

Showing 5 of 6 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…
96V1431998-08-28Service Brakes, HydraulicMMSA HAS DETERMINED THAT UNDER CERTAIN CONDITIONS, THE FRONT LOWER BRAKE HOSES MAY…

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
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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 1991 Montero 3.0L 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 1991 Montero have open recalls?

NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 3.0L get?

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