MitsubishiDiamante19953.0L/mitsubishi/diamante/1995/3-0l/

1995 Mitsubishi Diamante — 3.0L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1995 Diamante 3.0L. Covers both the standard and High Output 3.0L.

Engine 3.0LTransmission Automatic 4-spd

The 1995 Mitsubishi Diamante pairs a 3.0L engine with a 4-speed automatic transmission, returning an EPA-estimated 19 combined mpg and requiring 4.2 quarts of oil to service its drivetrain. Within the model's 1992-2004 lifespan, this year represents a notably stable chapter, logging only 12 total owner complaints and zero recalls. While its few reported issues primarily center on the powertrain, the 1995 model sits far below the lineup's problematic 2002 peak of 133 complaints, marking it as a comparatively trouble-free reference point for researchers assessing the platform's history.

Model year19961995199419931992

Quick specs

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

Engine oil capacity4.2 qtOEM · verified
Engine oil type20W-40 / 10W-30 / 5W-30 APIOEM · verified
Lug nut torque65-80 ft-lbsOEM · verified
EPA fuel economy16/23/19 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 24 · 490 CCA battery, OE oil filter MD136790. 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 24 · 490 CCAOEM · verified
Tail / brake / turnOFFOEM · verified
Tire size4WD:P225-75R15OEM · verified
Wheel / rim6-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filterMD136790
Engine air filterMR571471
Fuel filterMB658684
Spark plugMS851336 alt MS851238
Front wiper bladesMZ690946 alt MR300876
Serpentine beltMD172376 alt AW328626
Thermostat1305A191 alt MD972903

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined16 / 23 / 19 mpg
DrivetrainFront-Wheel Drive
Passenger volume94 cu ft
Cargo volume14 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 4.2 qt of 20W-40 / 10W-30 / 5W-30 API engine oil, DOT 3 · DOT 4 brake fluid. Torque lug nuts to 65-80 ft-lbs, the oil drain plug to 29.0 ft-lbs. The firing order is 1-2-3-4-5-6.

Lubricants & capacities

Brake FluidDOT 3 · DOT 4
Engine CoolantETHYLENE GLYCOL
Engine Oil20W-40 · API · 10W-30 · 5W-30
Engine Oil Capacity4.2 qt
Power Steering FluidUse Mitsubishi PS fluid

Engine torques

Engine Flywheel Bolts54 ft-lbs
Intake Manifold to Engine Bolts13 ft-lbs
Exhaust Manifold to Cylinder Head Bolts14 ft-lbs
Main Bearings57 ft-lbs
Engine Oil Pan Drain Plug29.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs10 ft-lbs

Chassis torques

Lug Nuts65-80 ft-lbs

Ignition

Cylinder Firing Order1-2-3-4-5-6
Spark Plug Gap0.039-0.0.043 in
Spark Plug Torque15.0-21.0 ft-lbs
Ignition Timing5, Not adjustable degrees
Ignition Timing Acceptable Variance3 degrees

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.63-1.75 lbs
Oil GroupPAG
Oil Type56
Oil Capacity5.75-6.42 oz
Standard BCI Group Number24
Standard BCI Cranking Performance490 cca

Service checks

Pressure Test13 psi
Radiator Cap Pressure Relief13 psi
Engine Compression149 minimum PSI. 14 maximum variation PSI.

Brakes

Torque Caliper to Bracket20 ft-lbs / 54 ft-lbs
Torque to Knuckle40 ft-lbs / 65 ft-lbs
Minimum Pad ThicknessFront: 0.079; Rear: 0.079 in
Minimum Shoe Thickness0.039 in
Rotor Runout Limit0.0031 in / 0.0028 in
Rotor Nominal Thickness From0.79 in / 0.71 in / 0.94 in
Rotor Nominal Thickness To0.79 in / 0.71 in / 0.94 in
Rotor Minimum Machining0.728 in / 0.646 in / 0.88 in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
125 ft. lbs., Step 2: 9025 ft. lbs
Cylinder Head — tightening sequence 3 stages
180 ft. lbs.80 ft. lbs
2Loosen all bolts completely.
380 ft. lbs.80 ft. lbs
Cylinder Head — tightening sequence 3 stages
180 ft. lbs.80 ft. lbs
2Loosen all bolts completely.
380

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; coolant every 30,000 mi. The big-interval services (every 30,000 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.

Every 7,500 miBrake Hydraulic System (inspect fluid level) · Clutch Master Cylinder (inspect fluid level) · Engine Oil (drain & refill) · Power Steering System (inspect)
Every 15,000 miAxle Shaft Oil Seal (inspect) · Brake Line (inspect) · Brake Linings (inspect) · CV Joint Boot (inspect) · Engine Oil Filter (replace)
Every 30,000 miAccessory Drive Belt (inspect) · Brake System (inspect) · Engine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Exhaust System (Complete) (inspect) · Fuel Line (inspect)
Every 60,000 miBalance Shaft Drive Belt (replace) · Fuel Evaporative Emission Control System (inspect) · Fuel System (inspect) · Spark Plug Wires (replace) · Spark Plugs (replace)
Every 100,000 miTiming Belt (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.

Federal data shows the 1995 Mitsubishi Diamante sits at the lowest point in reported complaints across the provided model years, logging only 12 complaints and zero recalls compared to 34–49 complaints and two to three recalls annually from 1992 through 1994. While its 26 technical service bulletins exceed the mid-teens levels of the immediately preceding years, they remain well below the 45-to-66 range seen from 1997 onward, a period that escalates to a peak of 133 complaints and four recalls by 2002. For 1995 specifically, owner reports cluster in power train and air bags, with three crash-related complaints and zero fire-related complaints recorded. This model year falls at the bottom of the complaint arc just before the dataset shows a sustained multi-year rise in both complaints and recalls, suggesting a temporary low in reported federal issues. Given its minimal complaint volume and absence of recalls within a generation that grows increasingly troubled in subsequent years, the 1995 Diamante represents a comparatively good year to buy.

0
Open recalls
NHTSA campaigns
26
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
12
Owner complaints
3 involved a crash · 0 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 12 complaints on record, top 6 components.

Power Train5
Air Bags3
Engine & Engine Cooling1
Suspension1
Engine & Engine Cooling,Power Train1
Structure1

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 26 bulletins on record with NHTSA.

BulletinDateComponentSummary
TSB-22-54-0032022-04-07Exterior LightingThis Technical Service Bulletin was sent to dealers to explain the difference between…
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.
TT2182015-08-28Engine And Engine CoolingThis is a service newsletter (Tech Talk) that was sent out to dealers.

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

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VIN
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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 1995 Diamante 3.0L take?

4.2 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 1995 Diamante have open recalls?

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

What gas mileage does the 3.0L get?

EPA figures are 16 city / 23 highway / 19 combined mpg.