1991 Cadillac Allante Oil Type & Capacity: 5W-30 (6.5 quarts)
The 1991 Cadillac Allante takes 5W-30 motor oil — 6.5 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 6.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| 440T4/ME9 | API - SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F) | 6.50 QTS. | 6.00 QTS. | — |
| 4T60/ME9 | API - SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F) | 6.50 QTS. | 6.00 QTS. | — |
| F7/ME9 | API - SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F) | 6.50 QTS. | 6.00 QTS. | — |
More factory specs & repair guides for your Allante
🛞 1991 Cadillac Allante Tire Size & Pressure →🌧️ 1991 Cadillac Allante Wiper Blade Sizes →💡 1991 Cadillac Allante Light Bulb Sizes →📖 1991 Cadillac Allante Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
10.8 quarts (10.22 L) — 50/50 mixture of Ethylene Glycol Base Coolant and water. GM Specification 1825-M.
Frequently asked questions
What type of oil does a 1991 Cadillac Allante take?
The 1991 Cadillac Allante takes 5W-30 motor oil (API - SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F)), per the factory service manual.
What is the oil capacity of a 1991 Cadillac Allante?
The 1991 Cadillac Allante oil capacity is 6.5 quarts with a filter change, or 6.0 quarts without changing the filter.
How often should I change the oil in my 1991 Cadillac Allante?
Most 1991 Cadillac Allante 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 — Cadillac recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1991 Cadillac Allante?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1991 Cadillac Allante. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.