1985 Cadillac Fleetwood Oil Type & Capacity
The 1985 Cadillac Fleetwood oil type depends on the engine: the Base, 2D Coupe, 4.1 8 takes 5W-30 (4.0 quarts with filter); the Base, 2D Coupe, 4.3 T takes 5W-30 (5.0 quarts with filter); the Base, 4D Limousine takes 5W-30 (4.0 quarts with filter); the Base, 4D Sedan takes 5W-30 (5.0 quarts with filter); the Brougham, 2D Coupe, 4.1 8 takes 5W-30 (4.0 quarts with filter); the Brougham, 2D Coupe, 5.7 N takes 10W-30 (7.0 quarts with filter); the Brougham, 4D Sedan, 4.1 8 takes 5W-30 (4.0 quarts with filter); the Brougham, 4D Sedan, 5.7 N takes 10W-30 (7.0 quarts with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Base, 2D Coupe, 4.1 8: 5W-30, 4.0 quarts with filter
- Base, 2D Coupe, 4.3 T: 5W-30, 5.0 quarts with filter
- Base, 4D Limousine: 5W-30, 4.0 quarts with filter
- Base, 4D Sedan: 5W-30, 5.0 quarts with filter
- Brougham, 2D Coupe, 4.1 8: 5W-30, 4.0 quarts with filter
- Brougham, 2D Coupe, 5.7 N: 10W-30, 7.0 quarts with filter
- Brougham, 4D Sedan, 4.1 8: 5W-30, 4.0 quarts with filter
- Brougham, 4D Sedan, 5.7 N: 10W-30, 7.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, 2D Coupe, 4.1 8 — 4.1L Eng | SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to over 100Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 20W-20, 20W-40, & 20W-50 (20Deg.F to over 100Deg.F), 30 (40Deg.F to over 100Deg.F) | 4.00 QTS. | — | — |
| Base, 2D Coupe, 4.3 T — 4.3L Eng | SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to over 100Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 20W-20 (20Deg.F to over 100Deg.F), 30 (40Deg.F to over 100Deg.F) | 5.00 QTS. | — | — |
| Base, 4D Limousine — 4.1L Eng | SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to over 100Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 20W-20, 20W-40, & 20W-50 (20Deg.F to over 100Deg.F), 30 (40Deg.F to over 100Deg.F) | 4.00 QTS. | — | — |
| Base, 4D Sedan — 4.3L Eng | SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to over 100Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 20W-20 (20Deg.F to over 100Deg.F), 30 (40Deg.F to over 100Deg.F) | 5.00 QTS. | — | — |
| Brougham, 2D Coupe, 4.1 8 — 4.1L Eng | SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to over 100Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 20W-20, 20W-40, & 20W-50 (20Deg.F to over 100Deg.F), 30 (40Deg.F to over 100Deg.F) | 4.00 QTS. | — | — |
| Brougham, 2D Coupe, 5.7 N — 5.7L Eng | SAE 10W-30 (0Deg.F to 60Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 30 (Preferred) (0Deg.F to over 100Deg.F) | 7.00 QTS. | — | — |
| Brougham, 4D Sedan, 4.1 8 — 4.1L Eng | SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg.F to over 100Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 20W-20, 20W-40, & 20W-50 (20Deg.F to over 100Deg.F), 30 (40Deg.F to over 100Deg.F) | 4.00 QTS. | — | — |
| Brougham, 4D Sedan, 5.7 N — 5.7L Eng | SAE 10W-30 (0Deg.F to 60Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 30 (Preferred) (0Deg.F to over 100Deg.F) | 7.00 QTS. | — | — |
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More specs & repair guides for your Fleetwood
1985 Cadillac Fleetwood factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
13.2 quarts (12.49 L) — 50/50 mixture of Ethylene Glycol Base Antifreeze and water. GM Specification 1825-M.
Frequently asked questions
What type of oil does a 1985 Cadillac Fleetwood take?
It depends on the engine: Base, 2D Coupe, 4.1 8 uses 5W-30; Base, 2D Coupe, 4.3 T uses 5W-30; Base, 4D Limousine uses 5W-30; Base, 4D Sedan uses 5W-30; Brougham, 2D Coupe, 4.1 8 uses 5W-30; Brougham, 2D Coupe, 5.7 N uses 10W-30; Brougham, 4D Sedan, 4.1 8 uses 5W-30; Brougham, 4D Sedan, 5.7 N uses 10W-30.
How much oil does a 1985 Cadillac Fleetwood take?
Capacity depends on the engine: Base, 2D Coupe, 4.1 8 holds 4.0 quarts with filter; Base, 2D Coupe, 4.3 T holds 5.0 quarts with filter; Base, 4D Limousine holds 4.0 quarts with filter; Base, 4D Sedan holds 5.0 quarts with filter; Brougham, 2D Coupe, 4.1 8 holds 4.0 quarts with filter; Brougham, 2D Coupe, 5.7 N holds 7.0 quarts with filter; Brougham, 4D Sedan, 4.1 8 holds 4.0 quarts with filter; Brougham, 4D Sedan, 5.7 N holds 7.0 quarts with filter.
Can I use synthetic oil in my 1985 Cadillac Fleetwood?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1985 Cadillac Fleetwood. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.