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 with filter); the Base, 2.3 C takes 5W-20 (3.7 quarts with filter); the Quattro takes 5W-20 (3.7 quarts 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 specs & repair guides for your 90
1988 Audi 90 factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site 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.
How much oil does a 1988 Audi 90 take?
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.
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.