1983 Cadillac Seville Oil Type & Capacity
The 1983 Cadillac Seville oil type depends on the engine: the 4.1 8 takes 5W-30 (5.0 quarts qt with filter); the 5.7 N takes 10W-30 (7.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- 4.1 8: 5W-30, 5.0 quarts with filter
- 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 |
|---|---|---|---|---|
| 4.1 8 — 4.1L Eng | SAE 5W-30 (Below -20Deg.F to 100Deg.F), 10W-30 or 10W-40 (0Deg.F to Above 100Deg.F) | 5.00 QTS. | — | — |
| 5.7 N — 5.7L Eng | SAE 10W-30 (-20Deg.F to 60Deg.F), 15W-40 (10Deg.F to Above 100Deg.F), 30 (Preferred) (40Deg.F to Above 100Deg.F) | 7.00 QTS. | — | — |
More factory specs & repair guides for your Seville
🛞 1983 Cadillac Seville Tire Size & Pressure →🌧️ 1983 Cadillac Seville Wiper Blade Sizes →💡 1983 Cadillac Seville Light Bulb Sizes →📖 1983 Cadillac Seville Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
11.8 quarts (11.16 L) — 50/50 mixture of Ethylene Glycol Base Antifreeze and water. GM Specification 1825-M.
Frequently asked questions
What type of oil does a 1983 Cadillac Seville take?
It depends on the engine: 4.1 8 uses 5W-30; 5.7 N uses 10W-30.
What is the oil capacity of a 1983 Cadillac Seville?
Oil capacity depends on the engine: 4.1 8 holds 5.0 quarts with filter; 5.7 N holds 7.0 quarts with filter.
How often should I change the oil in my 1983 Cadillac Seville?
Most 1983 Cadillac Seville 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 1983 Cadillac Seville?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1983 Cadillac Seville. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.