1999 Pontiac Bonneville Oil Type & Capacity
The 1999 Pontiac Bonneville takes 10W-30 motor oil — 4.5 quarts with a filter change, per the factory service manual.
Factory-spec answer
10W-30 — 4.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| SE, 3.8 1 | API - SAE 10W-30 | 4.50 QTS. | — | — |
| SE, 3.8 K, 4T65E/M15 | API - SAE 10W-30 | 4.50 QTS. | — | — |
| SE, 3.8 K, 4T65E/MN3 | API - SAE 10W-30 | 4.50 QTS. | — | — |
| SLE, 4T65E/M15 | API - SAE 10W-30 | 4.50 QTS. | — | — |
| SLE, 4T65E/MN3 | API - SAE 10W-30 | 4.50 QTS. | — | — |
| SSE, 3.8 1 | API - SAE 10W-30 | 4.50 QTS. | — | — |
| SSE, 3.8 K, 4T65E/M15 | API - SAE 10W-30 | 4.50 QTS. | — | — |
| SSE, 3.8 K, 4T65E/MN3 | API - SAE 10W-30 | 4.50 QTS. | — | — |
| SSEi | API - SAE 10W-30 | 4.50 QTS. | — | — |
Buy the right oil
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More specs & repair guides for your Bonneville
1999 Pontiac Bonneville 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. After refill, the level must be checked. Add enough engine coolant so that the fluid is within the proper operating range.
Frequently asked questions
What type of oil does a 1999 Pontiac Bonneville take?
The 1999 Pontiac Bonneville takes 10W-30 motor oil (API - SAE 10W-30), per the factory service manual.
How much oil does a 1999 Pontiac Bonneville take?
The 1999 Pontiac Bonneville holds 4.5 quarts with a filter change.
Can I use synthetic oil in my 1999 Pontiac Bonneville?
Yes. 10W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1999 Pontiac Bonneville. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.