1988 Buick Century Oil Type & Capacity
The 1988 Buick Century oil type depends on the engine: the Custom, 2D Coupe, 2.5 R takes 5W-40 (3.0 quarts qt with filter); the Custom, 2D Coupe, 2.8 W, 125C/MD9 takes 5W-40 (4.0 quarts qt with filter); the Custom, 2D Coupe, 2.8 W, 440T4/ME9 takes 5W-40 (4.0 quarts qt with filter); the Custom, 2D Coupe, 3.8 3 takes 5W-30 (4.0 quarts qt with filter); the Custom, 4D Sedan, 2.5 R takes 5W-40 (3.0 quarts qt with filter); the Custom, 4D Sedan, 2.8 W, 125C/MD9 takes 5W-40 (4.0 quarts qt with filter); the Custom, 4D Sedan, 2.8 W, 440T4/ME9 takes 5W-40 (4.0 quarts qt with filter); the Custom, 4D Sedan, 3.8 3 takes 5W-30 (4.0 quarts qt with filter); the Custom, 4D Wagon, 2.5 R takes 5W-40 (3.0 quarts qt with filter); the Custom, 4D Wagon, 2.8 W, 125C/MD9 takes 5W-40 (4.0 quarts qt with filter); the Custom, 4D Wagon, 2.8 W, 440T4/ME9 takes 5W-40 (4.0 quarts qt with filter); the Custom, 4D Wagon, 3.8 3 takes 5W-30 (4.0 quarts qt with filter); the Estate Wagon, 2.8 W, 125C/MD9 takes 5W-40 (4.0 quarts qt with filter); the Estate Wagon, 2.8 W, 440T4/ME9 takes 5W-40 (4.0 quarts qt with filter); the Estate Wagon, 3.8 3 takes 5W-30 (4.0 quarts qt with filter); the Limited, 2D Coupe, 2.5 R takes 5W-40 (3.0 quarts qt with filter); the Limited, 2D Coupe, 2.8 W, 125C/MD9 takes 5W-40 (4.0 quarts qt with filter); the Limited, 2D Coupe, 2.8 W, 440T4/ME9 takes 5W-40 (4.0 quarts qt with filter); the Limited, 2D Coupe, 3.8 3 takes 5W-30 (4.0 quarts qt with filter); the Limited, 4D Sedan, 2.5 R takes 5W-40 (3.0 quarts qt with filter); the Limited, 4D Sedan, 2.8 W, 125C/MD9 takes 5W-40 (4.0 quarts qt with filter); the Limited, 4D Sedan, 2.8 W, 440T4/ME9 takes 5W-40 (4.0 quarts qt with filter); the Limited, 4D Sedan, 3.8 3 takes 5W-30 (4.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Custom, 2D Coupe, 2.5 R: 5W-40, 3.0 quarts with filter
- Custom, 2D Coupe, 2.8 W, 125C/MD9: 5W-40, 4.0 quarts with filter
- Custom, 2D Coupe, 2.8 W, 440T4/ME9: 5W-40, 4.0 quarts with filter
- Custom, 2D Coupe, 3.8 3: 5W-30, 4.0 quarts with filter
- Custom, 4D Sedan, 2.5 R: 5W-40, 3.0 quarts with filter
- Custom, 4D Sedan, 2.8 W, 125C/MD9: 5W-40, 4.0 quarts with filter
- Custom, 4D Sedan, 2.8 W, 440T4/ME9: 5W-40, 4.0 quarts with filter
- Custom, 4D Sedan, 3.8 3: 5W-30, 4.0 quarts with filter
- Custom, 4D Wagon, 2.5 R: 5W-40, 3.0 quarts with filter
- Custom, 4D Wagon, 2.8 W, 125C/MD9: 5W-40, 4.0 quarts with filter
- Custom, 4D Wagon, 2.8 W, 440T4/ME9: 5W-40, 4.0 quarts with filter
- Custom, 4D Wagon, 3.8 3: 5W-30, 4.0 quarts with filter
- Estate Wagon, 2.8 W, 125C/MD9: 5W-40, 4.0 quarts with filter
- Estate Wagon, 2.8 W, 440T4/ME9: 5W-40, 4.0 quarts with filter
- Estate Wagon, 3.8 3: 5W-30, 4.0 quarts with filter
- Limited, 2D Coupe, 2.5 R: 5W-40, 3.0 quarts with filter
- Limited, 2D Coupe, 2.8 W, 125C/MD9: 5W-40, 4.0 quarts with filter
- Limited, 2D Coupe, 2.8 W, 440T4/ME9: 5W-40, 4.0 quarts with filter
- Limited, 2D Coupe, 3.8 3: 5W-30, 4.0 quarts with filter
- Limited, 4D Sedan, 2.5 R: 5W-40, 3.0 quarts with filter
- Limited, 4D Sedan, 2.8 W, 125C/MD9: 5W-40, 4.0 quarts with filter
- Limited, 4D Sedan, 2.8 W, 440T4/ME9: 5W-40, 4.0 quarts with filter
- Limited, 4D Sedan, 3.8 3: 5W-30, 4.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Custom, 2D Coupe, 2.5 R — 2.5L Eng | SAE 5W-40 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30, (40Deg.F to Above 100Deg.F) | 3.00 QTS. | — | — |
| Custom, 2D Coupe, 2.8 W, 125C/MD9 — 2.8L Eng | SAE 5W-40 (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. | — | — |
| Custom, 2D Coupe, 2.8 W, 440T4/ME9 — 2.8L Eng | SAE 5W-40 (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. | — | — |
| Custom, 2D Coupe, 3.8 3 — 3.8L Eng | SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg. to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F) | 4.00 QTS. | — | — |
| Custom, 4D Sedan, 2.5 R — 2.5L Eng | SAE 5W-40 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30, (40Deg.F to Above 100Deg.F) | 3.00 QTS. | — | — |
| Custom, 4D Sedan, 2.8 W, 125C/MD9 — 2.8L Eng | SAE 5W-40 (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. | — | — |
| Custom, 4D Sedan, 2.8 W, 440T4/ME9 — 2.8L Eng | SAE 5W-40 (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. | — | — |
| Custom, 4D Sedan, 3.8 3 — 3.8L Eng | SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg. to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F) | 4.00 QTS. | — | — |
| Custom, 4D Wagon, 2.5 R — 2.5L Eng | SAE 5W-40 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30, (40Deg.F to Above 100Deg.F) | 3.00 QTS. | — | — |
| Custom, 4D Wagon, 2.8 W, 125C/MD9 — 2.8L Eng | SAE 5W-40 (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. | — | — |
| Custom, 4D Wagon, 2.8 W, 440T4/ME9 — 2.8L Eng | SAE 5W-40 (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. | — | — |
| Custom, 4D Wagon, 3.8 3 — 3.8L Eng | SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg. to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F) | 4.00 QTS. | — | — |
| Estate Wagon, 2.8 W, 125C/MD9 — 2.8L Eng | SAE 5W-40 (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. | — | — |
| Estate Wagon, 2.8 W, 440T4/ME9 — 2.8L Eng | SAE 5W-40 (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. | — | — |
| Estate Wagon, 3.8 3 — 3.8L Eng | SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg. to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F) | 4.00 QTS. | — | — |
| Limited, 2D Coupe, 2.5 R — 2.5L Eng | SAE 5W-40 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30, (40Deg.F to Above 100Deg.F) | 3.00 QTS. | — | — |
| Limited, 2D Coupe, 2.8 W, 125C/MD9 — 2.8L Eng | SAE 5W-40 (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. | — | — |
| Limited, 2D Coupe, 2.8 W, 440T4/ME9 — 2.8L Eng | SAE 5W-40 (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. | — | — |
| Limited, 2D Coupe, 3.8 3 — 3.8L Eng | SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg. to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F) | 4.00 QTS. | — | — |
| Limited, 4D Sedan, 2.5 R — 2.5L Eng | SAE 5W-40 (Preferred) (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30, (40Deg.F to Above 100Deg.F) | 3.00 QTS. | — | — |
| Limited, 4D Sedan, 2.8 W, 125C/MD9 — 2.8L Eng | SAE 5W-40 (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. | — | — |
| Limited, 4D Sedan, 2.8 W, 440T4/ME9 — 2.8L Eng | SAE 5W-40 (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. | — | — |
| Limited, 4D Sedan, 3.8 3 — 3.8L Eng | SAE 5W-30 (Below -20Deg.F to 60Deg.F), 10W-30 (Preferred) (0Deg. to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F) | 4.00 QTS. | — | — |
More factory specs & repair guides for your Century
🛞 1988 Buick Century Tire Size & Pressure →🌧️ 1988 Buick Century Wiper Blade Sizes →💡 1988 Buick Century Light Bulb Sizes →📖 1988 Buick Century Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
9.5 quarts (8.99 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 Century take?
It depends on the engine: Custom, 2D Coupe, 2.5 R uses 5W-40; Custom, 2D Coupe, 2.8 W, 125C/MD9 uses 5W-40; Custom, 2D Coupe, 2.8 W, 440T4/ME9 uses 5W-40; Custom, 2D Coupe, 3.8 3 uses 5W-30; Custom, 4D Sedan, 2.5 R uses 5W-40; Custom, 4D Sedan, 2.8 W, 125C/MD9 uses 5W-40; Custom, 4D Sedan, 2.8 W, 440T4/ME9 uses 5W-40; Custom, 4D Sedan, 3.8 3 uses 5W-30; Custom, 4D Wagon, 2.5 R uses 5W-40; Custom, 4D Wagon, 2.8 W, 125C/MD9 uses 5W-40; Custom, 4D Wagon, 2.8 W, 440T4/ME9 uses 5W-40; Custom, 4D Wagon, 3.8 3 uses 5W-30; Estate Wagon, 2.8 W, 125C/MD9 uses 5W-40; Estate Wagon, 2.8 W, 440T4/ME9 uses 5W-40; Estate Wagon, 3.8 3 uses 5W-30; Limited, 2D Coupe, 2.5 R uses 5W-40; Limited, 2D Coupe, 2.8 W, 125C/MD9 uses 5W-40; Limited, 2D Coupe, 2.8 W, 440T4/ME9 uses 5W-40; Limited, 2D Coupe, 3.8 3 uses 5W-30; Limited, 4D Sedan, 2.5 R uses 5W-40; Limited, 4D Sedan, 2.8 W, 125C/MD9 uses 5W-40; Limited, 4D Sedan, 2.8 W, 440T4/ME9 uses 5W-40; Limited, 4D Sedan, 3.8 3 uses 5W-30.
What is the oil capacity of a 1988 Buick Century?
Oil capacity depends on the engine: Custom, 2D Coupe, 2.5 R holds 3.0 quarts with filter; Custom, 2D Coupe, 2.8 W, 125C/MD9 holds 4.0 quarts with filter; Custom, 2D Coupe, 2.8 W, 440T4/ME9 holds 4.0 quarts with filter; Custom, 2D Coupe, 3.8 3 holds 4.0 quarts with filter; Custom, 4D Sedan, 2.5 R holds 3.0 quarts with filter; Custom, 4D Sedan, 2.8 W, 125C/MD9 holds 4.0 quarts with filter; Custom, 4D Sedan, 2.8 W, 440T4/ME9 holds 4.0 quarts with filter; Custom, 4D Sedan, 3.8 3 holds 4.0 quarts with filter; Custom, 4D Wagon, 2.5 R holds 3.0 quarts with filter; Custom, 4D Wagon, 2.8 W, 125C/MD9 holds 4.0 quarts with filter; Custom, 4D Wagon, 2.8 W, 440T4/ME9 holds 4.0 quarts with filter; Custom, 4D Wagon, 3.8 3 holds 4.0 quarts with filter; Estate Wagon, 2.8 W, 125C/MD9 holds 4.0 quarts with filter; Estate Wagon, 2.8 W, 440T4/ME9 holds 4.0 quarts with filter; Estate Wagon, 3.8 3 holds 4.0 quarts with filter; Limited, 2D Coupe, 2.5 R holds 3.0 quarts with filter; Limited, 2D Coupe, 2.8 W, 125C/MD9 holds 4.0 quarts with filter; Limited, 2D Coupe, 2.8 W, 440T4/ME9 holds 4.0 quarts with filter; Limited, 2D Coupe, 3.8 3 holds 4.0 quarts with filter; Limited, 4D Sedan, 2.5 R holds 3.0 quarts with filter; Limited, 4D Sedan, 2.8 W, 125C/MD9 holds 4.0 quarts with filter; Limited, 4D Sedan, 2.8 W, 440T4/ME9 holds 4.0 quarts with filter; Limited, 4D Sedan, 3.8 3 holds 4.0 quarts with filter.
How often should I change the oil in my 1988 Buick Century?
Most 1988 Buick Century 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 — Buick recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1988 Buick Century?
Yes. 5W-40 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1988 Buick Century. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.