1991 Oldsmobile Cutlass Supreme Oil Type & Capacity
The 1991 Oldsmobile Cutlass Supreme oil type depends on the engine: the Base, 2D Convertible takes 5W-30 (5.0 quarts qt with filter); the Base, 2D Coupe, 2.3 D, 125C/MD9 takes 5W-30 (5.0 quarts qt with filter); the Base, 2D Coupe, 2.3 D, 3T40/MD9 takes 5W-30 (5.0 quarts qt with filter); the Base, 2D Coupe, 3.1 T takes 5W-30 (5.0 quarts qt with filter); the Base, 2D Coupe, 3.4 X, Automatic takes 5W-30 (6.0 quarts qt with filter); the Base, 2D Coupe, 3.4 X, Standard takes 5W-30 (6.0 quarts qt with filter); the Base, 4D Sedan, 2.3 D, 125C/MD9 takes 5W-30 (5.0 quarts qt with filter); the Base, 4D Sedan, 2.3 D, 3T40/MD9 takes 5W-30 (5.0 quarts qt with filter); the Base, 4D Sedan, 3.1 T takes 5W-30 (5.0 quarts qt with filter); the Base, 4D Sedan, 3.4 X takes 5W-30 (6.0 quarts qt with filter); the International, 2D Coupe, 3.1 T takes 5W-30 (5.0 quarts qt with filter); the International, 2D Coupe, 3.4 X, Automatic takes 5W-30 (6.0 quarts qt with filter); the International, 2D Coupe, 3.4 X, Standard takes 5W-30 (6.0 quarts qt with filter); the International, 4D Sedan, 3.1 T takes 5W-30 (5.0 quarts qt with filter); the International, 4D Sedan, 3.4 X, Automatic takes 5W-30 (6.0 quarts qt with filter); the International, 4D Sedan, 3.4 X, Standard takes 5W-30 (6.0 quarts qt with filter); the SL, 2D Coupe, 3.1 T takes 5W-30 (5.0 quarts qt with filter); the SL, 2D Coupe, 3.4 X, Automatic takes 5W-30 (6.0 quarts qt with filter); the SL, 2D Coupe, 3.4 X, Standard takes 5W-30 (6.0 quarts qt with filter); the SL, 4D Sedan, 3.1 T takes 5W-30 (5.0 quarts qt with filter); the SL, 4D Sedan, 3.4 X, Automatic takes 5W-30 (6.0 quarts qt with filter); the SL, 4D Sedan, 3.4 X, Standard takes 5W-30 (6.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Base, 2D Convertible: 5W-30, 5.0 quarts with filter
- Base, 2D Coupe, 2.3 D, 125C/MD9: 5W-30, 5.0 quarts with filter
- Base, 2D Coupe, 2.3 D, 3T40/MD9: 5W-30, 5.0 quarts with filter
- Base, 2D Coupe, 3.1 T: 5W-30, 5.0 quarts with filter
- Base, 2D Coupe, 3.4 X, Automatic: 5W-30, 6.0 quarts with filter
- Base, 2D Coupe, 3.4 X, Standard: 5W-30, 6.0 quarts with filter
- Base, 4D Sedan, 2.3 D, 125C/MD9: 5W-30, 5.0 quarts with filter
- Base, 4D Sedan, 2.3 D, 3T40/MD9: 5W-30, 5.0 quarts with filter
- Base, 4D Sedan, 3.1 T: 5W-30, 5.0 quarts with filter
- Base, 4D Sedan, 3.4 X: 5W-30, 6.0 quarts with filter
- International, 2D Coupe, 3.1 T: 5W-30, 5.0 quarts with filter
- International, 2D Coupe, 3.4 X, Automatic: 5W-30, 6.0 quarts with filter
- International, 2D Coupe, 3.4 X, Standard: 5W-30, 6.0 quarts with filter
- International, 4D Sedan, 3.1 T: 5W-30, 5.0 quarts with filter
- International, 4D Sedan, 3.4 X, Automatic: 5W-30, 6.0 quarts with filter
- International, 4D Sedan, 3.4 X, Standard: 5W-30, 6.0 quarts with filter
- SL, 2D Coupe, 3.1 T: 5W-30, 5.0 quarts with filter
- SL, 2D Coupe, 3.4 X, Automatic: 5W-30, 6.0 quarts with filter
- SL, 2D Coupe, 3.4 X, Standard: 5W-30, 6.0 quarts with filter
- SL, 4D Sedan, 3.1 T: 5W-30, 5.0 quarts with filter
- SL, 4D Sedan, 3.4 X, Automatic: 5W-30, 6.0 quarts with filter
- SL, 4D Sedan, 3.4 X, Standard: 5W-30, 6.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, 2D Convertible — 3.1L Eng | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| Base, 2D Coupe, 2.3 D, 125C/MD9 — 2.3L Eng | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| Base, 2D Coupe, 2.3 D, 3T40/MD9 — 2.3L Eng | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| Base, 2D Coupe, 3.1 T — 3.1L Eng | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| Base, 2D Coupe, 3.4 X, Automatic — 3.4L Eng | API - SAE 5W-30 | 6.00 QTS. | 5.00 QTS. | — |
| Base, 2D Coupe, 3.4 X, Standard — 3.4L Eng | API - SAE 5W-30 | 6.00 QTS. | 5.00 QTS. | — |
| Base, 4D Sedan, 2.3 D, 125C/MD9 — 2.3L Eng | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| Base, 4D Sedan, 2.3 D, 3T40/MD9 — 2.3L Eng | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| Base, 4D Sedan, 3.1 T — 3.1L Eng | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| Base, 4D Sedan, 3.4 X — 3.4L Eng | API - SAE 5W-30 | 6.00 QTS. | 5.00 QTS. | — |
| International, 2D Coupe, 3.1 T — 3.1L Eng | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| International, 2D Coupe, 3.4 X, Automatic — 3.4L Eng | API - SAE 5W-30 | 6.00 QTS. | 5.00 QTS. | — |
| International, 2D Coupe, 3.4 X, Standard — 3.4L Eng | API - SAE 5W-30 | 6.00 QTS. | 5.00 QTS. | — |
| International, 4D Sedan, 3.1 T — 3.1L Eng | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| International, 4D Sedan, 3.4 X, Automatic — 3.4L Eng | API - SAE 5W-30 | 6.00 QTS. | 5.00 QTS. | — |
| International, 4D Sedan, 3.4 X, Standard — 3.4L Eng | API - SAE 5W-30 | 6.00 QTS. | 5.00 QTS. | — |
| SL, 2D Coupe, 3.1 T — 3.1L Eng | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| SL, 2D Coupe, 3.4 X, Automatic — 3.4L Eng | API - SAE 5W-30 | 6.00 QTS. | 5.00 QTS. | — |
| SL, 2D Coupe, 3.4 X, Standard — 3.4L Eng | API - SAE 5W-30 | 6.00 QTS. | 5.00 QTS. | — |
| SL, 4D Sedan, 3.1 T — 3.1L Eng | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| SL, 4D Sedan, 3.4 X, Automatic — 3.4L Eng | API - SAE 5W-30 | 6.00 QTS. | 5.00 QTS. | — |
| SL, 4D Sedan, 3.4 X, Standard — 3.4L Eng | API - SAE 5W-30 | 6.00 QTS. | 5.00 QTS. | — |
Complete Oil Change Bundle for 1991 Oldsmobile Cutlass Supreme
Everything you need delivered in one order. Pre-matched to your factory spec (5W-30, 5.0 quarts).
As an Amazon Associate we earn from qualifying purchases. Prices shown are real-time retail estimates.
Buy the right oil & filter for your Cutlass Supreme
🛒 Buy 5W-30 Full Synthetic Oil (5.0 quarts needed) on AmazonPopular Full Synthetic Brands (5W-30):
As an Amazon Associate we earn from qualifying purchases made through these links.
More factory specs & repair guides for your Cutlass Supreme
🛞 1991 Oldsmobile Cutlass Supreme Tire Size & Pressure →🌧️ 1991 Oldsmobile Cutlass Supreme Wiper Blade Sizes →💡 1991 Oldsmobile Cutlass Supreme Light Bulb Sizes →📖 1991 Oldsmobile Cutlass Supreme Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
12.5 quarts (11.82 L) — 50/50 mixture of Ethylene Glycol Base Antifreeze and water. GM Specification 1825-M.
Frequently asked questions
What type of oil does a 1991 Oldsmobile Cutlass Supreme take?
It depends on the engine: Base, 2D Convertible uses 5W-30; Base, 2D Coupe, 2.3 D, 125C/MD9 uses 5W-30; Base, 2D Coupe, 2.3 D, 3T40/MD9 uses 5W-30; Base, 2D Coupe, 3.1 T uses 5W-30; Base, 2D Coupe, 3.4 X, Automatic uses 5W-30; Base, 2D Coupe, 3.4 X, Standard uses 5W-30; Base, 4D Sedan, 2.3 D, 125C/MD9 uses 5W-30; Base, 4D Sedan, 2.3 D, 3T40/MD9 uses 5W-30; Base, 4D Sedan, 3.1 T uses 5W-30; Base, 4D Sedan, 3.4 X uses 5W-30; International, 2D Coupe, 3.1 T uses 5W-30; International, 2D Coupe, 3.4 X, Automatic uses 5W-30; International, 2D Coupe, 3.4 X, Standard uses 5W-30; International, 4D Sedan, 3.1 T uses 5W-30; International, 4D Sedan, 3.4 X, Automatic uses 5W-30; International, 4D Sedan, 3.4 X, Standard uses 5W-30; SL, 2D Coupe, 3.1 T uses 5W-30; SL, 2D Coupe, 3.4 X, Automatic uses 5W-30; SL, 2D Coupe, 3.4 X, Standard uses 5W-30; SL, 4D Sedan, 3.1 T uses 5W-30; SL, 4D Sedan, 3.4 X, Automatic uses 5W-30; SL, 4D Sedan, 3.4 X, Standard uses 5W-30.
What is the oil capacity of a 1991 Oldsmobile Cutlass Supreme?
Oil capacity depends on the engine: Base, 2D Convertible holds 5.0 quarts with filter; Base, 2D Coupe, 2.3 D, 125C/MD9 holds 5.0 quarts with filter; Base, 2D Coupe, 2.3 D, 3T40/MD9 holds 5.0 quarts with filter; Base, 2D Coupe, 3.1 T holds 5.0 quarts with filter; Base, 2D Coupe, 3.4 X, Automatic holds 6.0 quarts with filter; Base, 2D Coupe, 3.4 X, Standard holds 6.0 quarts with filter; Base, 4D Sedan, 2.3 D, 125C/MD9 holds 5.0 quarts with filter; Base, 4D Sedan, 2.3 D, 3T40/MD9 holds 5.0 quarts with filter; Base, 4D Sedan, 3.1 T holds 5.0 quarts with filter; Base, 4D Sedan, 3.4 X holds 6.0 quarts with filter; International, 2D Coupe, 3.1 T holds 5.0 quarts with filter; International, 2D Coupe, 3.4 X, Automatic holds 6.0 quarts with filter; International, 2D Coupe, 3.4 X, Standard holds 6.0 quarts with filter; International, 4D Sedan, 3.1 T holds 5.0 quarts with filter; International, 4D Sedan, 3.4 X, Automatic holds 6.0 quarts with filter; International, 4D Sedan, 3.4 X, Standard holds 6.0 quarts with filter; SL, 2D Coupe, 3.1 T holds 5.0 quarts with filter; SL, 2D Coupe, 3.4 X, Automatic holds 6.0 quarts with filter; SL, 2D Coupe, 3.4 X, Standard holds 6.0 quarts with filter; SL, 4D Sedan, 3.1 T holds 5.0 quarts with filter; SL, 4D Sedan, 3.4 X, Automatic holds 6.0 quarts with filter; SL, 4D Sedan, 3.4 X, Standard holds 6.0 quarts with filter.
How often should I change the oil in my 1991 Oldsmobile Cutlass Supreme?
Most 1991 Oldsmobile Cutlass Supreme owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — Oldsmobile recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1991 Oldsmobile Cutlass Supreme?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1991 Oldsmobile Cutlass Supreme. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.