1988 Buick Reatta Oil Type & Capacity
The 1988 Buick Reatta takes 5W-30 motor oil — 4.0 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 4.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Reatta — 3.8L Eng | SAE 5W-30 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F) | 4.00 QTS. | — | — |
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More specs & repair guides for your Reatta
1988 Buick Reatta 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 Ethylene Glycol Base Antifreeze and water. GM Specification 1825-M.
Frequently asked questions
What type of oil does a 1988 Buick Reatta take?
The 1988 Buick Reatta takes 5W-30 motor oil (SAE 5W-30 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F)), per the factory service manual.
How much oil does a 1988 Buick Reatta take?
The 1988 Buick Reatta holds 4.0 quarts with a filter change.
Can I use synthetic oil in my 1988 Buick Reatta?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1988 Buick Reatta. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.