DodgeConquest1986Overview/dodge/conquest/1986/base/

1986 Dodge Conquest

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1986 Conquest.

Transmission Automatic 4-spd

The 1986 Dodge Conquest is presented with a 4.0‑qt engine oil capacity and accepts viscosities of 20W‑20, 15W‑40 or 5W‑30, while its powertrain is mated to an automatic 4‑speed transmission and carries an EPA fuel‑economy rating of 17/22/19 mpg (city/highway/combined). These figures outline the fluid requirements, drivetrain layout and efficiency expectations for the model year. Because the supplied data set does not contain any reliability history information for the 1986 Conquest, its long‑term dependability remains unspecified in this reference.

Model year198619851984

Quick specs

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

Engine oil capacity4.0 qtOEM · verified
Engine oil type20W-20 / 15W-40 / 5W-30OEM · verified
EPA fuel economy17/22/19 mpgEPA · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined17 / 22 / 19 mpg
DrivetrainRear-Wheel Drive
Recommended fuelPremium Gasoline

Service quick specs OEM factory data

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

This engine holds 4.0 qt of 20W-20 / 15W-40 / 5W-30 engine oil, GL-5 · 80W-90 · 85W-90 in the differential, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear OilGL-5 · 80W-90 · 85W-90
Differential Gear Oil Capacity2.5 Pints
Engine CoolantETHYLENE GLYCOL
Engine Oil20W-20 · 15W-40 · 5W-30 · 5W-40
Engine Oil Capacity4.0 qt
Power Steering FluidUSE MOPAR PART NO. 4318055 OR EQUIVALENT

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 3,000 mi; coolant every 15,000 mi. The big-interval services (every 15,000 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 3,000 miEngine Oil (drain & refill)
Every 6,000 miEngine Oil Filter (replace)
Every 7,500 miBrake Hydraulic System (inspect fluid level) · Power Steering System (inspect)
At 15,000 miThrottle Position Sensor (inspect)
Every 15,000 miAccessory Drive Belt (inspect) · Air Conditioning System (inspect) · Brake System (inspect) · Clutch Master Cylinder (inspect fluid level) · Drive Axle Assembly (drain & refill) · Engine Coolant System (leak inspection)
Every 30,000 miAccessory Drive Belt (inspect) · Differential (inspect fluid level) · Engine Air Filter Element (replace) · Steering Linkage (inspect) · Suspension Ball Joint (inspect) · Transmission Assembly (inspect)
Every 50,000 miAir Injection System (inspect) · Air Intake Duct (inspect) · Engine Coolant System Hoses (inspect) · Fuel Evaporative Canister (replace) · Fuel Evaporative Emission Control System (inspect) · Fuel Evaporative Emission Control System Lines (inspect)
At 60,000 miAccessory Drive Belt (inspect) · Air Conditioning System (inspect)

Owner how-tos

Condensed service procedures for routine maintenance. Procedures that require dealer diagnostic equipment are identified and summarized only.

Common procedures

Key fob — remote (RKE) programming programming new fob buttons Dealer tool OEM · verified
Tool requiredDRBIII scan tool (dealer / locksmith)
WhyTransmitter codes are written into the receiver in the passenger door module
Anti-theft (SKIS) — module initialization after immobilizer module replacement Dealer tool OEM · verified
When neededAfter Sentry Key Immobilizer Module (SKIM) replacement
Tool requiredDRBIII scan tool
Also requiredThe vehicle's four-digit PIN code

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

1
Open recalls
NHTSA campaigns
0
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
0
Owner complaints
0 involved a crash · 0 a fire

No owner complaints on record with NHTSA for this vehicle.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

95V103003Seat 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…

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 Conquest. 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 1986 Conquest take?

4.0 qt of ABOVE 20 degrees F: 30, 20 degrees F TO 80 degrees F: 20W-20, ABOVE 10 degrees F: 15W-40, BELOW 100 degrees F 5W-30 OR 5W-40, BELOW 60 degrees F: 5W-30, 5W-40, per the factory manual.

Does the 1986 Conquest have open recalls?

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

What gas mileage does the Conquest get?

EPA figures are 17 city / 22 highway / 19 combined mpg.