1984 Jeep Grand Wagoneer Oil Type & Capacity
The 1984 Jeep Grand Wagoneer oil type depends on the engine: the 4.2 C, Automatic takes 5W-30 (6.0 quarts with filter); the 4.2 C, Standard takes 5W-30 (6.0 quarts with filter); the 5.9 N takes 5W-30 (5.0 quarts with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- 4.2 C, Automatic: 5W-30, 6.0 quarts with filter
- 4.2 C, Standard: 5W-30, 6.0 quarts with filter
- 5.9 N: 5W-30, 5.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| 4.2 C, Automatic — 4.2L Eng | API - SAE 5W-30 (Below 0Deg.F), 10W-30 or 10W-40 (Above 0Deg.F), 20W-40 (Above 32Deg.F) | 6.00 QTS. | — | — |
| 4.2 C, Standard — 4.2L Eng | API - SAE 5W-30 (Below 0Deg.F), 10W-30 or 10W-40 (Above 0Deg.F), 20W-40 (Above 32Deg.F) | 6.00 QTS. | — | — |
| 5.9 N — 5.9L Eng | API - SAE 5W-30 (Below 0Deg.F), 10W-30 or 10W-40 (Above 0Deg.F), 20W-40 (Above 32Deg.F) | 5.00 QTS. | — | — |
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More specs & repair guides for your Grand Wagoneer
1984 Jeep Grand Wagoneer factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
10.5 quarts (9.93 L) — 50/50 mixture of Ethylene Glycol Base Antifreeze and water
Frequently asked questions
What type of oil does a 1984 Jeep Grand Wagoneer take?
It depends on the engine: 4.2 C, Automatic uses 5W-30; 4.2 C, Standard uses 5W-30; 5.9 N uses 5W-30.
How much oil does a 1984 Jeep Grand Wagoneer take?
Capacity depends on the engine: 4.2 C, Automatic holds 6.0 quarts with filter; 4.2 C, Standard holds 6.0 quarts with filter; 5.9 N holds 5.0 quarts with filter.
Can I use synthetic oil in my 1984 Jeep Grand Wagoneer?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1984 Jeep Grand Wagoneer. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.