Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1984 Cutlass Supreme.
The 1984 Oldsmobile Cutlass Supreme is the 1984 edition of Oldsmobile's long-running Cutlass Supreme line, with routine maintenance calling for 4 quarts of engine oil in 20W-20, 20W-40, or 20W-50 viscosities. Owner-reported reliability records show 22 total complaints for this model year, with Engine & Engine Cooling standing out as the top complaint area and two recalls filed. Because the broader model complaint history covers only 1990 through 1996—peaking at 252 complaints in 1994 and reaching a low of 90 in 1995—the 1984 model falls outside that tracked window, so its complaint volume cannot be directly compared to those later years.
Fluid capacities, tune-up values and fuel economy at a glance.
Engine, drivetrain, dimensions and economy.
| Overall length | 200.8 in |
| Overall width | 72 in |
| Overall height | 55.5 in |
| Wheelbase | 108.3 in |
| Curb weight | 3203 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, DOT 3 brake fluid.
| Brake Fluid | DOT 3 |
| 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 | 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 | 6 qt |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The federal record supplied covers only model years 1990 through 1996, with complaint counts ranging from 90 (1995) to 252 (1994) and recall counts varying between 1 and 8 per year. No data are listed for the 1984 model year, so there is no basis to compare its complaint or recall frequency to the surrounding years in this dataset. Consequently, the trend across the generation cannot be ascertained for 1984, and the target year’s position in any arc of improvement or deterioration remains unspecified. Without comparative figures for 1984, any assertion about its relative reliability would be speculative. Therefore, based solely on the information provided, there is insufficient evidence to determine whether the 1984 Oldsmobile Cutlass Supreme is a good year to purchase.
All 22 complaints on record, top 8 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 2 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.
SOME VEHICLES HAVE BUCKET SEAT BACK LOCKS THAT DO NOT CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD 207, ANCHORAGE OF SEATS. IN EVENT OF A CRASH, THE SEAT BACK LOCK MAY NOT FUNCTION. Remedy: INSPECTION OF SEAT BACK LOCKS WILL BE PERFORMED. LOCKS THAT HAVE BENT, BROKEN OR MISSING HOOKS WILL BE REPLACED.
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 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.