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1985 Oldsmobile Custom Cruiser

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1985 Custom Cruiser.

The 1985 Oldsmobile Custom Cruiser specifies a 4-quart oil capacity with allowable viscosities of 20W-20, 20W-40, or 20W-50, defining its specific mechanical maintenance requirements. Recorded complaint data for this model line was subsequently tracked from 1991 through 1994, documenting annual complaint volumes ranging from a low of one in 1993 to a high of seventeen in 1992. This 1985 model year therefore predates the documented reliability tracking window, existing outside the specific complaint metrics that would later characterize the vehicle's aging years.

Model year199219911989198819871986198519841979

Quick specs

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

Engine oil capacity4 qtOEM · verified
Engine oil type20W-20 / 20W-40 / 20W-50OEM · verified

Fitment & sizes

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

From the factory this vehicle uses OE oil filter 12731179. Note the factory fuel filter is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known.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 filter12731179
Engine air filter06484235 alt 08997189
Fuel filter5651803 discontinued · alt 25011603
Spark plug19366108
Serpentine belt25512309 alt 14076348
Thermostat10207373 alt 22547855

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length220.5 in
Overall width79.9 in
Overall height58.7 in
Wheelbase116.1 in
Curb weight4085 lb

Service quick specs OEM factory data

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

This engine holds 4 qt of 20W-20 / 20W-40 / 20W-50 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 Capacity4.4 qt
Engine CoolantETHYLENE GLYCOL
Engine Oil20W-20 · 20W-40 · 20W-50 · 15W-40 · 10W-30 · 10W-40 · 5W-30
Engine Oil Capacity4 qt
Engine OilAPI · 15W-30 · 10W-30
Engine Oil Capacity7 qt

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 5,000 mi.

At 5,000 miExhaust Pressure Regulator (inspect) · Tire & Wheel Assembly (rotate)
Every 5,000 miDifferential (inspect fluid level) · Engine Oil Filter (replace) · Fuel Filter Water Separator (inspect) · Shift Linkage (inspect) · Steering Linkage (inspect) · Steering System (inspect)
At 7,500 miCarburetor Mounting Fasteners (inspect) · Choke System (inspect) · Drive Axle Assembly (drain & refill) · Engine Oil Filter (replace)
Every 7,500 miAccessory Drive Belt (inspect) · Body Latches, Locks & Hinges (inspect) · Brake System (inspect) · Engine Oil (drain & refill) · Exhaust System (Complete) (inspect) · Parking Brake Cable (lubricate)
Every 15,000 miEngine Oil Filter (replace) · Exhaust Pressure Regulator (inspect) · Tire & Wheel Assembly (rotate)
Every 30,000 miChoke System (inspect) · Diesel Fuel Injection Pump Timing (inspect) · Distributor Vacuum Advance (inspect) · EGR System (inspect) · Engine Air Filter Element (replace) · Engine Breather Filter (replace)
Every 100,000 miTransmission Fluid & Filter (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.

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
Owner complaints by model year NHTSA · this generation & adjacent
’91’92’93’94

No owner complaints on record with NHTSA for this vehicle.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

89V102000Vehicle Speed ControlReported 16/06/1989

A SMALL NYLON BUSHING IN THE CRUISE CONTROL SERVO BAIL MAY SLIP OUT OF PLACE, CAUSING INTERMITTENT AND UNEXPECTED INCREASES IN ENGINE SPEED OR DIESELING (ENGINE RUN ON WITH IGNITION OFF). Remedy: INSTALL A NEW BUSHING IN CRUISE CONTROL SERVO BAIL.

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 Custom Cruiser. 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.

Vehicles taking 4 qtEngine oil filter 12731179Engine air filter 06484235Fuel filter 5651803Spark plug 19366108

Reference guides

Cross-vehicle references for the kinds of data on this page.

Vehicle recalls & TSBsOBD-II trouble codesMaintenance schedulesFluid capacities & specs

Frequently asked

How much oil does the 1985 Custom Cruiser take?

4 qt of ABOVE 40 degrees F: 30, ABOVE 20 degrees F: 20W-20, 20W-40, 20W-50, ABOVE 10 degrees F: 15W-40, ABOVE 0 degrees F: 10W-30 OR 10W-40, BELOW 60 degrees F: 5W-30, per the factory manual.

Does the 1985 Custom Cruiser have open recalls?

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