GeoTracker 4WD1991Overview/geo/tracker-4wd/1991/base/

1991 Geo Tracker 4WD

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1991 Tracker 4WD.

The 1991 Geo Tracker 4WD takes 4.5 qt of 10W-30 engine oil.

Model year199619921991

Quick specs

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

Engine oil capacity4.5 qtOEM · verified
Engine oil type10W-30 / 5W-30 APIOEM · verified

Fitment & sizes

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

From the factory this vehicle uses OE oil filter 19468075. Note the factory front wiper blades is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. 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.

OE service part numbers OEM · verified

Engine oil filter19468075
Engine air filter96064348
Fuel filter25121587
Spark plug19354423
Front wiper blades12344994 discontinued
Serpentine belt30005360 alt 96058052
Thermostat96067236 alt 91177653

Service quick specs OEM factory data

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

This engine holds 4.5 qt of 10W-30 / 5W-30 API engine oil, 80W-90 · GL-5 in the differential, DOT 3 brake fluid.

Lubricants & capacities

Brake FluidDOT 3
Differential Gear Oil80W-90 · GL-5
Differential Gear Oil Capacity2.1 qt
Engine CoolantETHYLENE GLYCOL
Engine OilAPI · 10W-30 · 5W-30
Engine Oil Capacity4.5 qt
Power Steering FluidATF

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.

At 7,500 miDrive Axle Assembly (drain & refill) · Transfer Case Assembly (drain & refill) · Transmission Assembly (drain & refill)
Every 7,500 miBody Latches, Locks & Hinges (inspect) · Brake Hydraulic System (inspect fluid level) · Brake System (inspect) · Clutch Master Cylinder (inspect fluid level) · Engine Oil (drain & refill) · Engine Oil Filter (replace)
Every 15,000 miCV Joint Boot (inspect) · Driveshaft (inspect) · Driveshaft U-Joint (inspect) · Engine Valves (inspect valve lash) · Universal Vehicle Operation (inspect idle speed) · Wheel Bearing (inspect)
Every 30,000 miDrive Axle Assembly (drain & refill) · Engine Air Filter Element (replace) · Engine Breather Filter (replace) · Engine Coolant System (drain, flush & refill) · Fuel Filter (replace) · Fuel Line (inspect)
Every 50,000 miEGR System (inspect) · PCV Valve (replace) · Transmission Oil Cooler Line (inspect)
Every 60,000 miAccessory Drive Belt (inspect) · Distributor Cap (inspect) · Emission Control System (inspect) · Fuel Tank Filler Cap O-Ring (inspect) · Ignition Timing (inspect) · Spark Plug Wires (replace)
Every 80,000 miOxygen Sensor (replace)
At 90,000 miTiming Belt (inspect)
Every 100,000 miCatalytic Converter (inspect) · Fuel Evaporative Canister (replace) · Fuel Injector (clean) · Powertrain Control System Sensors (inspect) · Transmission Assembly (drain & refill)

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 1991 Tracker 4WD take?

4.5 qt of ABOVE 40 degrees F 30W API, ABOVE 0 degrees F 10W-30 API, ALL TEMPERATURES 5W-30 API, per the factory manual.