MitsubishiDiamante19923.0L/mitsubishi/diamante/1992/3-0l/

1992 Mitsubishi Diamante — 3.0L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1992 Diamante 3.0L. Covers both the standard and High Output 3.0L.

Body PASSENGER CAREngine 3.0LTransmission Automatic 4-spd

The 1992 Mitsubishi Diamante 3.0L is a passenger car equipped with a 3.0‑liter engine and an automatic four‑speed transmission; it uses a 4.2‑quart oil capacity with 20W‑40, 10W‑30 or 5W‑30 API‑rated oil. Its EPA fuel‑economy ratings are 16 city, 22 highway and 18 combined miles per gallon. Owner complaint data for this model record 49 total complaints, a level that falls well below the model’s peak of 133 complaints in 2002 and approaches the low‑complaint years that ended with just three reports by 2004, indicating that the 1992 version entered the lineup during a comparatively stable reliability period.

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
EPA fuel economy16/22/18 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 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.

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 beltMZ690263 alt MD172376
Thermostat1305A191 alt MD184011

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined16 / 22 / 18 mpg
DrivetrainFront-Wheel Drive
Passenger volume94 cu ft
Cargo volume14 cu ft
Recommended fuelPremium Gasoline

Performance & power Independent road tests

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

Independent published road-test results.

8.8–9.2 sec0–60 mph (tested)quickest 8.80 sec — 1992 LS Sedan
202 hpHorsepower (as tested)
202 lb-ftTorque (as tested)
YearTrim / engine0–60¼ mileHPDrivetrain
1992LS Sedan 3.0L V68.80 sec16.80 sec202 hpFWD
1992LS Sedan 3.0L V68.90 sec16.60 sec202 hpFWD
1992LS Sedan 3.0L V69.20 sec17.00 sec202 hpFWD

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.

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

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 50,000 miFuel System (inspect)
Every 60,000 miBalance Shaft Drive Belt (replace) · Spark Plugs (replace) · Timing 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.

The 1992 Mitsubishi Diamante sits at the start of a decline in complaints, with 49 reports that year versus 35 in 1993 and 34 in 1994, yet it precedes a sharp surge in 2000–2002. Recall activity peaks in 2002 with four recalls, compared to only two in 1992, indicating that later models faced more regulatory scrutiny. The 1992 model’s top complaint areas—engine cooling (10), electrical (7), airbags (5), and brakes (4)—suggest a focus on powertrain and safety components, while the single crash and fire complaint are comparatively low. Compared to the surrounding years, 1992’s complaint level is moderate, and its recall count is lower than the subsequent peak, implying a relatively stable early‑generation platform. Given its modest complaint profile and absence of major safety recalls, 1992 can be considered a reasonable year to purchase, provided a thorough mechanical inspection is performed.

2
Open recalls
NHTSA campaigns
14
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
49
Owner complaints
1 involved a crash · 1 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 49 complaints on record, top 8 components.

Engine & Engine Cooling10
Electrical System7
Air Bags5
Service Brakes, Hydraulic4
Suspension4
Power Train3
Visibility3
Seat Belts2

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

96V143002Service Brakes, Hydraulic:Foundation Components:Hoses, Lines/Piping, And FittingsReported 12/08/1996

UNDER CONDITIONS OF FULL LOCK STEERING AND FULL SUSPENSION TRAVEL, THE LEFT OR RIGHT FRONT WHEEL-SIDE BRAKE HOSE CAN CRACK, RESULTING IN BRAKE FLUID LEAKAGE. Remedy: DEALERS WILL REPLACE THE LEFT AND RIGHT FRONT WHEEL-SIDE BRAKE HOSES WITH REVISED HOSE ASSEMBLIES.

96V143001Service Brakes, Hydraulic:Foundation Components:Hoses, Lines/Piping, And FittingsReported 25/07/1996

UNDER CONDITIONS OF FULL LOCK STEERING AND FULL SUSPENSION TRAVEL, THE LEFT OR RIGHT FRONT WHEEL-SIDE BRAKE HOSE CAN CRACK, RESULTING IN BRAKE FLUID LEAKAGE. Remedy: DEALERS WILL REPLACE THE LEFT AND RIGHT FRONT WHEEL-SIDE BRAKE HOSES WITH REVISED HOSE ASSEMBLIES.

Technical service bulletins NHTSA · verified

Showing 5 of 14 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
Decode a VIN to confirm the transmission and build data for a specific Diamante. 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 1992 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 1992 Diamante 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 16 city / 22 highway / 18 combined mpg.