1991 Audi Coupe Quattro Oil Type & Capacity: 5W-20 (5.0 quarts)
The 1991 Audi Coupe Quattro takes 5W-20 motor oil — 5.0 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-20 — 5.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Coupe Quattro — 2.3L Eng | API - SAE 5W-20/30 (Below -15Deg.F to 20Deg.F), 10W-30/40 (-5Deg.F to 65Deg.F), 15W-40/50 (10Deg.F to Above 85Deg.F), 20W-40/50 (15Deg.F to Above 85Deg.F) | 5.00 QTS. | 4.50 QTS. | — |
More factory specs & repair guides for your Coupe Quattro
🛞 1991 Audi Coupe Quattro Tire Size & Pressure →🌧️ 1991 Audi Coupe Quattro Wiper Blade Sizes →💡 1991 Audi Coupe Quattro Light Bulb Sizes →📖 1991 Audi Coupe Quattro Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
8.6 quarts (8.13 L) — 50/50 mixture of Ethylene Glycol Antifreeze and water. Use Phosphate-free Antifreeze.
Frequently asked questions
What type of oil does a 1991 Audi Coupe Quattro take?
The 1991 Audi Coupe Quattro takes 5W-20 motor oil (API - SAE 5W-20/30 (Below -15Deg.F to 20Deg.F), 10W-30/40 (-5Deg.F to 65Deg.F), 15W-40/50 (10Deg.F to Above 85Deg.F), 20W-40/50 (15Deg.F to Above 85Deg.F)), per the factory service manual.
What is the oil capacity of a 1991 Audi Coupe Quattro?
The 1991 Audi Coupe Quattro oil capacity is 5.0 quarts with a filter change, or 4.5 quarts without changing the filter.
How often should I change the oil in my 1991 Audi Coupe Quattro?
Most 1991 Audi Coupe Quattro 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 — Audi recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1991 Audi Coupe Quattro?
Yes. 5W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1991 Audi Coupe Quattro. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.