1998 Jeep Wrangler Oil Type & Capacity
The 1998 Jeep Wrangler oil type depends on the engine: the Sahara, Automatic takes 5W-30 (6.0 quarts qt with filter); the Sahara, Standard takes 5W-30 (6.0 quarts qt with filter); the SE, Automatic takes 5W-30 (4.0 quarts qt with filter); the SE, Standard takes 5W-30 (4.0 quarts qt with filter); the Sport, Automatic takes 5W-30 (6.0 quarts qt with filter); the Sport, Standard takes 5W-30 (6.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Sahara, Automatic: 5W-30, 6.0 quarts with filter
- Sahara, Standard: 5W-30, 6.0 quarts with filter
- SE, Automatic: 5W-30, 4.0 quarts with filter
- SE, Standard: 5W-30, 4.0 quarts with filter
- Sport, Automatic: 5W-30, 6.0 quarts with filter
- Sport, Standard: 5W-30, 6.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Sahara, Automatic — 4.0L Eng | API - SAE 5W-30 (-20Deg.F to 60Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 6.00 QTS. | — | — |
| Sahara, Standard — 4.0L Eng | API - SAE 5W-30 (-20Deg.F to 60Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 6.00 QTS. | — | — |
| SE, Automatic — 2.5L Eng | API - SAE 5W-30 (-20Deg.F to 60Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 4.00 QTS. | — | — |
| SE, Standard — 2.5L Eng | API - SAE 5W-30 (-20Deg.F to 60Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 4.00 QTS. | — | — |
| Sport, Automatic — 4.0L Eng | API - SAE 5W-30 (-20Deg.F to 60Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 6.00 QTS. | — | — |
| Sport, Standard — 4.0L Eng | API - SAE 5W-30 (-20Deg.F to 60Deg.F), 10W-30 (0Deg.F to Above 100Deg.F) | 6.00 QTS. | — | — |
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More factory specs & repair guides for your Wrangler
🛞 1998 Jeep Wrangler Tire Size & Pressure →🌧️ 1998 Jeep Wrangler Wiper Blade Sizes →💡 1998 Jeep Wrangler Light Bulb Sizes →📖 1998 Jeep Wrangler Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
10.5 quarts (9.93 L) — 50/50 mixture of Ethylene Glycol Antifreeze and water. Includes: 1 qt. in coolant reserve tank.
Frequently asked questions
What type of oil does a 1998 Jeep Wrangler take?
It depends on the engine: Sahara, Automatic uses 5W-30; Sahara, Standard uses 5W-30; SE, Automatic uses 5W-30; SE, Standard uses 5W-30; Sport, Automatic uses 5W-30; Sport, Standard uses 5W-30.
What is the oil capacity of a 1998 Jeep Wrangler?
Oil capacity depends on the engine: Sahara, Automatic holds 6.0 quarts with filter; Sahara, Standard holds 6.0 quarts with filter; SE, Automatic holds 4.0 quarts with filter; SE, Standard holds 4.0 quarts with filter; Sport, Automatic holds 6.0 quarts with filter; Sport, Standard holds 6.0 quarts with filter.
How often should I change the oil in my 1998 Jeep Wrangler?
Most 1998 Jeep Wrangler 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 — Jeep recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1998 Jeep Wrangler?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1998 Jeep Wrangler. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.