1988 Audi 90 Oil Type & Capacity
The 1988 Audi 90 oil type depends on the engine: the Base, 2.0 B takes 5W-20 (3.2 quarts qt with filter); the Base, 2.3 C takes 5W-20 (3.7 quarts qt with filter); the Quattro takes 5W-20 (3.7 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Base, 2.0 B: 5W-20, 3.2 quarts with filter
- Base, 2.3 C: 5W-20, 3.7 quarts with filter
- Quattro: 5W-20, 3.7 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, 2.0 B — 2.0L Eng | 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) | 3.20 QTS. | 2.60 QTS. | — |
| Base, 2.3 C — 2.3L Eng | 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) | 3.70 QTS. | 3.20 QTS. | — |
| Quattro — 2.3L Eng | 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) | 3.70 QTS. | 3.20 QTS. | — |
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More factory specs & repair guides for your 90
🛞 1988 Audi 90 Tire Size & Pressure →🌧️ 1988 Audi 90 Wiper Blade Sizes →💡 1988 Audi 90 Light Bulb Sizes →📖 1988 Audi 90 Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
7.4 quarts (7 L) — Phosphate-free antifreeze containing ethylene-glycol
Frequently asked questions
What type of oil does a 1988 Audi 90 take?
It depends on the engine: Base, 2.0 B uses 5W-20; Base, 2.3 C uses 5W-20; Quattro uses 5W-20.
What is the oil capacity of a 1988 Audi 90?
Oil capacity depends on the engine: Base, 2.0 B holds 3.2 quarts with filter; Base, 2.3 C holds 3.7 quarts with filter; Quattro holds 3.7 quarts with filter.
How often should I change the oil in my 1988 Audi 90?
Most 1988 Audi 90 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 1988 Audi 90?
Yes. 5W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1988 Audi 90. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.