1991 Chevrolet Corvette Oil Type & Capacity
The 1991 Chevrolet Corvette oil type depends on the engine: the Base, 2D Convertible, Automatic, 4L60/MD8 takes 5W-30 (5.0 quarts with filter); the Base, 2D Convertible, Automatic, 700R4/MD8 takes 5W-30 (5.0 quarts with filter); the Base, 2D Convertible, Standard takes 5W-30 (5.0 quarts with filter); the Base, 2D Coupe, Automatic, 4L60/MD8 takes 5W-30 (5.0 quarts with filter); the Base, 2D Coupe, Automatic, 700R4/MD8 takes 5W-30 (5.0 quarts with filter); the Base, 2D Coupe, Standard takes 5W-30 (5.0 quarts with filter); the ZR-1 takes 5W-30 (8.6 quarts with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Base, 2D Convertible, Automatic, 4L60/MD8: 5W-30, 5.0 quarts with filter
- Base, 2D Convertible, Automatic, 700R4/MD8: 5W-30, 5.0 quarts with filter
- Base, 2D Convertible, Standard: 5W-30, 5.0 quarts with filter
- Base, 2D Coupe, Automatic, 4L60/MD8: 5W-30, 5.0 quarts with filter
- Base, 2D Coupe, Automatic, 700R4/MD8: 5W-30, 5.0 quarts with filter
- Base, 2D Coupe, Standard: 5W-30, 5.0 quarts with filter
- ZR-1: 5W-30, 8.6 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, 2D Convertible, Automatic, 4L60/MD8 — Base | SAE 5W-30 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 5.00 QTS. | 4.00 QTS. | Use oil that has been certified by the American Petroleum Institute. |
| Base, 2D Convertible, Automatic, 700R4/MD8 — Base | SAE 5W-30 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 5.00 QTS. | 4.00 QTS. | Use oil that has been certified by the American Petroleum Institute. |
| Base, 2D Convertible, Standard — Base | SAE 5W-30 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 5.00 QTS. | 4.00 QTS. | Use oil that has been certified by the American Petroleum Institute. |
| Base, 2D Coupe, Automatic, 4L60/MD8 — Base | SAE 5W-30 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 5.00 QTS. | 4.00 QTS. | Use oil that has been certified by the American Petroleum Institute. |
| Base, 2D Coupe, Automatic, 700R4/MD8 — Base | SAE 5W-30 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 5.00 QTS. | 4.00 QTS. | Use oil that has been certified by the American Petroleum Institute. |
| Base, 2D Coupe, Standard — Base | SAE 5W-30 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 5.00 QTS. | 4.00 QTS. | Use oil that has been certified by the American Petroleum Institute. |
| ZR-1 — ZR-1 | SAE 5W-30 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 8.60 QTS. | 7.60 QTS. | Use oil that has been certified by the American Petroleum Institute. |
Buy the right oil
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More specs & repair guides for your Corvette
1991 Chevrolet Corvette factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
17.8 quarts (16.84 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 Chevrolet Corvette take?
It depends on the engine: Base, 2D Convertible, Automatic, 4L60/MD8 uses 5W-30; Base, 2D Convertible, Automatic, 700R4/MD8 uses 5W-30; Base, 2D Convertible, Standard uses 5W-30; Base, 2D Coupe, Automatic, 4L60/MD8 uses 5W-30; Base, 2D Coupe, Automatic, 700R4/MD8 uses 5W-30; Base, 2D Coupe, Standard uses 5W-30; ZR-1 uses 5W-30.
How much oil does a 1991 Chevrolet Corvette take?
Capacity depends on the engine: Base, 2D Convertible, Automatic, 4L60/MD8 holds 5.0 quarts with filter; Base, 2D Convertible, Automatic, 700R4/MD8 holds 5.0 quarts with filter; Base, 2D Convertible, Standard holds 5.0 quarts with filter; Base, 2D Coupe, Automatic, 4L60/MD8 holds 5.0 quarts with filter; Base, 2D Coupe, Automatic, 700R4/MD8 holds 5.0 quarts with filter; Base, 2D Coupe, Standard holds 5.0 quarts with filter; ZR-1 holds 8.6 quarts with filter.
Can I use synthetic oil in my 1991 Chevrolet Corvette?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1991 Chevrolet Corvette. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.