1991 Volvo 780 Oil Type & Capacity
The 1991 Volvo 780 takes 10W-30 motor oil — 4.0 quarts with a filter change, per the factory service manual.
Factory-spec answer
10W-30 — 4.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| AW71 — 2.3L Eng | API - SG/CD, SAE 10W-30 (-4Deg.F to Above 104Deg.F) | 4.00 QTS. | 3.50 QTS. | — |
| AW71L — 2.3L Eng | API - SG/CD, SAE 10W-30 (-4Deg.F to Above 104Deg.F) | 4.00 QTS. | 3.50 QTS. | — |
Buy the right oil
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More specs & repair guides for your 780
1991 Volvo 780 factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
10.0 quarts (9.46 L) — VOLVO Coolant Type C
Frequently asked questions
What type of oil does a 1991 Volvo 780 take?
The 1991 Volvo 780 takes 10W-30 motor oil (API - SG/CD, SAE 10W-30 (-4Deg.F to Above 104Deg.F)), per the factory service manual.
How much oil does a 1991 Volvo 780 take?
The 1991 Volvo 780 holds 4.0 quarts with a filter change, or 3.5 quarts without changing the filter.
Can I use synthetic oil in my 1991 Volvo 780?
Yes. 10W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1991 Volvo 780. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.