Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1984 Custom Cruiser.
The 1984 Oldsmobile Custom Cruiser, a full-size station wagon built on GM's B-body platform, required 4 quarts of motor oil with viscosity recommendations spanning 20W-20, 20W-40, or 20W-50 depending on operating conditions—a specification reflecting the robustness expected of a vehicle designed for durable, everyday utility; according to complaint data compiled from 1991 to 1994, the model reached its nadir in reliability during 1992 with 17 recorded complaints, though this figure dropped dramatically to just 1 complaint in 1993, suggesting that whatever engineering refinements were implemented for that model year resulted in a notably more dependable vehicle and marking the 1984 Custom Cruiser as a baseline year in a reliability trajectory that would improve substantially in subsequent iterations.
Fluid capacities, tune-up values and fuel economy at a glance.
Engine, drivetrain, dimensions and economy.
| Overall length | 220.5 in |
| Overall width | 79.9 in |
| Overall height | 59.1 in |
| Wheelbase | 116.1 in |
| Curb weight | 4127 lb |
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.
| Brake Fluid | DOT 3 |
| Differential Gear Oil | 80W-90 · GL-5 |
| Differential Gear Oil Capacity | 4.4 qt |
| Engine Coolant | ETHYLENE GLYCOL |
| Engine Oil | 20W-20 · 20W-40 · 20W-50 · 15W-40 · 10W-30 · 10W-40 · 5W-30 |
| Engine Oil Capacity | 4 qt |
| Engine Oil | API · 15W-30 · 10W-30 |
| Engine Oil Capacity | 7 qt |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Showing 1 of 1 campaigns on record for this vehicle.
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.
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
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Cross-vehicle references for the kinds of data on this page.
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.
NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.