1991 Chrysler Imperial Oil Type & Capacity: 5W-30 (4.5 quarts)
The 1991 Chrysler Imperial takes 5W-30 motor oil — 4.5 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 4.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| 3.3 R, 41TE | API - SAE 5W-30 (Below 100Deg.F), 10W-30 (Above 0Deg.F) | 4.50 QTS. | 4.00 QTS. | — |
| 3.3 R, A604 | API - SAE 5W-30 (Below 100Deg.F), 10W-30 (Above 0Deg.F) | 4.50 QTS. | 4.00 QTS. | — |
| 3.8 L, 41TE | API - SAE 5W-30 (Below 100Deg.F), 10W-30 (Above 0Deg.F) | 4.50 QTS. | 4.00 QTS. | — |
| 3.8 L, A604 | API - SAE 5W-30 (Below 100Deg.F), 10W-30 (Above 0Deg.F) | 4.50 QTS. | 4.00 QTS. | — |
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More factory specs & repair guides for your Imperial
🛞 1991 Chrysler Imperial Tire Size & Pressure →🌧️ 1991 Chrysler Imperial Wiper Blade Sizes →💡 1991 Chrysler Imperial Light Bulb Sizes →📖 1991 Chrysler Imperial Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
9.5 quarts (8.99 L) — PRESTONE II, PEAK, or antifreeze containing the ALUGARD 340-2 inhibitor system
Frequently asked questions
What type of oil does a 1991 Chrysler Imperial take?
The 1991 Chrysler Imperial takes 5W-30 motor oil (API - SAE 5W-30 (Below 100Deg.F), 10W-30 (Above 0Deg.F)), per the factory service manual.
What is the oil capacity of a 1991 Chrysler Imperial?
The 1991 Chrysler Imperial oil capacity is 4.5 quarts with a filter change, or 4.0 quarts without changing the filter.
How often should I change the oil in my 1991 Chrysler Imperial?
Most 1991 Chrysler Imperial 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 — Chrysler recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1991 Chrysler Imperial?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1991 Chrysler Imperial. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.