1991 Isuzu Stylus Oil Type & Capacity
The 1991 Isuzu Stylus takes 5W-20 motor oil — 3.6 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-20 — 3.6 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| S, Automatic | API - SAE 5W-20 (Below 60Deg.F), 10W-30 (Above 0Deg.F), 30 (Above 40Deg.F), 15W-40, 20W-40/50 (Above 10Deg.F) | 3.60 QTS. | 3.20 QTS. | — |
| S, Standard | API - SAE 5W-20 (Below 60Deg.F), 10W-30 (Above 0Deg.F), 30 (Above 40Deg.F), 15W-40, 20W-40/50 (Above 10Deg.F) | 3.60 QTS. | 3.20 QTS. | — |
| XS, Automatic | API - SAE 5W-20 (Below 60Deg.F), 10W-30 (Above 0Deg.F), 30 (Above 40Deg.F), 15W-40, 20W-40/50 (Above 10Deg.F) | 3.60 QTS. | 3.20 QTS. | — |
| XS, Standard | API - SAE 5W-20 (Below 60Deg.F), 10W-30 (Above 0Deg.F), 30 (Above 40Deg.F), 15W-40, 20W-40/50 (Above 10Deg.F) | 3.60 QTS. | 3.20 QTS. | — |
Buy the right oil
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More specs & repair guides for your Stylus
1991 Isuzu Stylus factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
7.2 quarts (6.81 L) — 50/50 mixture of Ethylene Glycol Antifreeze and water
Frequently asked questions
What type of oil does a 1991 Isuzu Stylus take?
The 1991 Isuzu Stylus takes 5W-20 motor oil (API - SAE 5W-20 (Below 60Deg.F), 10W-30 (Above 0Deg.F), 30 (Above 40Deg.F), 15W-40, 20W-40/50 (Above 10Deg.F)), per the factory service manual.
How much oil does a 1991 Isuzu Stylus take?
The 1991 Isuzu Stylus holds 3.6 quarts with a filter change, or 3.2 quarts without changing the filter.
Can I use synthetic oil in my 1991 Isuzu Stylus?
Yes. 5W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1991 Isuzu Stylus. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.