1991 Subaru XT Oil Type & Capacity
The 1991 Subaru XT takes 5W-30 motor oil — 4.2 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 4.2 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Automatic — 1.8L Eng | API - SAE 5W-30 (Below 30Deg.F), 10W-30/40 (15Deg.F to 95Deg.F) | 4.20 QTS. | — | — |
| Standard — 1.8L Eng | API - SAE 5W-30 (Below 30Deg.F), 10W-30/40 (15Deg.F to 95Deg.F) | 4.20 QTS. | — | — |
Buy the right oil
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More specs & repair guides for your XT
1991 Subaru XT factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
5.8 quarts (5.48 L) — 50/50 mixture of Ethylene Glycol Antifreeze and water
Frequently asked questions
What type of oil does a 1991 Subaru XT take?
The 1991 Subaru XT takes 5W-30 motor oil (API - SAE 5W-30 (Below 30Deg.F), 10W-30/40 (15Deg.F to 95Deg.F)), per the factory service manual.
How much oil does a 1991 Subaru XT take?
The 1991 Subaru XT holds 4.2 quarts with a filter change.
Can I use synthetic oil in my 1991 Subaru XT?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1991 Subaru XT. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.