2003 Cadillac Seville Oil Type & Capacity
The 2003 Cadillac Seville takes 5W-30 motor oil — 7.5 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 7.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| SLS | API - SAE 5W-30 | 7.50 QTS. | — | API - SAE 10W-30 can be use if SAE 5W-30 is not available and if it is going to be 0Deg.F (-18Deg.C) or above. |
| STS | API - SAE 5W-30 | 7.50 QTS. | — | API - SAE 10W-30 can be use if SAE 5W-30 is not available and if it is going to be 0Deg.F (-18Deg.C) or above. |
Buy the right oil
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More specs & repair guides for your Seville
2003 Cadillac Seville factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
13.0 quarts (12.3 L) — 50/50 mixture of DEX-COOL and clean drinkable water
Frequently asked questions
What type of oil does a 2003 Cadillac Seville take?
The 2003 Cadillac Seville takes 5W-30 motor oil (API - SAE 5W-30), per the factory service manual.
How much oil does a 2003 Cadillac Seville take?
The 2003 Cadillac Seville holds 7.5 quarts with a filter change.
Can I use synthetic oil in my 2003 Cadillac Seville?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2003 Cadillac Seville. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.