1991 Jaguar XJ6 Oil Type & Capacity: 5W-20 (8.5 quarts)
The 1991 Jaguar XJ6 takes 5W-20 motor oil — 8.5 quarts with a filter change, per the factory service manual.
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base — 4.0L Eng | API - SAE 5W-20/30/40 (Below 14Deg.F), 10W-30/40/50 (-4Deg.F to 110Deg.F), 15W-40/50, 20W-40/50 (14Deg.F and Above) | — | 7.90 QTS. | — |
| Sovereign — 4.0L Eng | API - SAE 5W-20/30/40 (Below 14Deg.F), 10W-30/40/50 (-4Deg.F to 110Deg.F), 15W-40/50, 20W-40/50 (14Deg.F and Above) | — | 7.90 QTS. | — |
| Vanden Plas — 4.0L Eng | API - SAE 5W-20/30/40 (Below 14Deg.F), 10W-30/40/50 (-4Deg.F to 110Deg.F), 15W-40/50, 20W-40/50 (14Deg.F and Above) | — | 7.90 QTS. | — |
More factory specs & repair guides for your XJ6
🛞 1991 Jaguar XJ6 Tire Size & Pressure →🌧️ 1991 Jaguar XJ6 Wiper Blade Sizes →💡 1991 Jaguar XJ6 Light Bulb Sizes →📖 1991 Jaguar XJ6 Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
9.7 quarts (9.17 L) — JAGUAR Antifreeze and Summer Coolant. If not available, use phosphate-free antifreeze conforming to Specification: BS6580. (Plain water must not be used).
Frequently asked questions
What type of oil does a 1991 Jaguar XJ6 take?
The 1991 Jaguar XJ6 takes 5W-20 motor oil (API - SAE 5W-20/30/40 (Below 14Deg.F), 10W-30/40/50 (-4Deg.F to 110Deg.F), 15W-40/50, 20W-40/50 (14Deg.F and Above)), per the factory service manual.
What is the oil capacity of a 1991 Jaguar XJ6?
The 1991 Jaguar XJ6 oil capacity is 8.5 quarts with a filter change, or 7.9 quarts without changing the filter.
How often should I change the oil in my 1991 Jaguar XJ6?
Most 1991 Jaguar XJ6 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 — Jaguar recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1991 Jaguar XJ6?
Yes. 5W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1991 Jaguar XJ6. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.