1998 Oldsmobile Silhouette Oil Type & Capacity
The 1998 Oldsmobile Silhouette takes 5W-30 motor oil — 4.5 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 4.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| GL | API - SAE 5W-30 | 4.50 QTS. | — | — |
| GLS | API - SAE 5W-30 | 4.50 QTS. | — | — |
| GS | API - SAE 5W-30 | 4.50 QTS. | — | — |
| Premiere Edition | API - SAE 5W-30 | 4.50 QTS. | — | — |
Buy the right oil
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More specs & repair guides for your Silhouette
1998 Oldsmobile Silhouette factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
9.6 quarts (9.08 L) — 50/50 mixture of DEX-COOL and clean water (preferably distilled)
Frequently asked questions
What type of oil does a 1998 Oldsmobile Silhouette take?
The 1998 Oldsmobile Silhouette takes 5W-30 motor oil (API - SAE 5W-30), per the factory service manual.
How much oil does a 1998 Oldsmobile Silhouette take?
The 1998 Oldsmobile Silhouette holds 4.5 quarts with a filter change.
Can I use synthetic oil in my 1998 Oldsmobile Silhouette?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1998 Oldsmobile Silhouette. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.