1991 Jeep Comanche Oil Type & Capacity
The 1991 Jeep Comanche oil type depends on the engine: the Base, 2.5 P, 4WD, Automatic takes 10W-30 (4.0 quarts qt with filter); the Base, 2.5 P, 4WD, Standard, AX4 takes 10W-30 (4.0 quarts qt with filter); the Base, 2.5 P, 4WD, Standard, AX5 takes 10W-30 (4.0 quarts qt with filter); the Base, 2.5 P, RWD, Automatic takes 10W-30 (4.0 quarts qt with filter); the Base, 2.5 P, RWD, Standard, AX4 takes 10W-30 (4.0 quarts qt with filter); the Base, 2.5 P, RWD, Standard, AX5 takes 10W-30 (4.0 quarts qt with filter); the Base, 4.0 S, 4WD, Automatic takes 10W-30 (6.0 quarts qt with filter); the Base, 4.0 S, 4WD, Standard takes 10W-30 (6.0 quarts qt with filter); the Base, 4.0 S, RWD, Automatic takes 10W-30 (6.0 quarts qt with filter); the Base, 4.0 S, RWD, Standard takes 10W-30 (6.0 quarts qt with filter); the Eliminator, 4WD, Automatic takes 10W-30 (6.0 quarts qt with filter); the Eliminator, 4WD, Standard takes 10W-30 (6.0 quarts qt with filter); the Eliminator, RWD, Automatic takes 10W-30 (6.0 quarts qt with filter); the Eliminator, RWD, Standard takes 10W-30 (6.0 quarts qt with filter); the Pioneer, 2.5 P, 4WD, Automatic takes 10W-30 (4.0 quarts qt with filter); the Pioneer, 2.5 P, 4WD, Standard, AX4 takes 10W-30 (4.0 quarts qt with filter); the Pioneer, 2.5 P, 4WD, Standard, AX5 takes 10W-30 (4.0 quarts qt with filter); the Pioneer, 2.5 P, RWD, Automatic takes 10W-30 (4.0 quarts qt with filter); the Pioneer, 2.5 P, RWD, Standard, AX4 takes 10W-30 (4.0 quarts qt with filter); the Pioneer, 2.5 P, RWD, Standard, AX5 takes 10W-30 (4.0 quarts qt with filter); the Pioneer, 4.0 S, 4WD, Automatic takes 10W-30 (6.0 quarts qt with filter); the Pioneer, 4.0 S, 4WD, Standard takes 10W-30 (6.0 quarts qt with filter); the Pioneer, 4.0 S, RWD, Automatic takes 10W-30 (6.0 quarts qt with filter); the Pioneer, 4.0 S, RWD, Standard takes 10W-30 (6.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Base, 2.5 P, 4WD, Automatic: 10W-30, 4.0 quarts with filter
- Base, 2.5 P, 4WD, Standard, AX4: 10W-30, 4.0 quarts with filter
- Base, 2.5 P, 4WD, Standard, AX5: 10W-30, 4.0 quarts with filter
- Base, 2.5 P, RWD, Automatic: 10W-30, 4.0 quarts with filter
- Base, 2.5 P, RWD, Standard, AX4: 10W-30, 4.0 quarts with filter
- Base, 2.5 P, RWD, Standard, AX5: 10W-30, 4.0 quarts with filter
- Base, 4.0 S, 4WD, Automatic: 10W-30, 6.0 quarts with filter
- Base, 4.0 S, 4WD, Standard: 10W-30, 6.0 quarts with filter
- Base, 4.0 S, RWD, Automatic: 10W-30, 6.0 quarts with filter
- Base, 4.0 S, RWD, Standard: 10W-30, 6.0 quarts with filter
- Eliminator, 4WD, Automatic: 10W-30, 6.0 quarts with filter
- Eliminator, 4WD, Standard: 10W-30, 6.0 quarts with filter
- Eliminator, RWD, Automatic: 10W-30, 6.0 quarts with filter
- Eliminator, RWD, Standard: 10W-30, 6.0 quarts with filter
- Pioneer, 2.5 P, 4WD, Automatic: 10W-30, 4.0 quarts with filter
- Pioneer, 2.5 P, 4WD, Standard, AX4: 10W-30, 4.0 quarts with filter
- Pioneer, 2.5 P, 4WD, Standard, AX5: 10W-30, 4.0 quarts with filter
- Pioneer, 2.5 P, RWD, Automatic: 10W-30, 4.0 quarts with filter
- Pioneer, 2.5 P, RWD, Standard, AX4: 10W-30, 4.0 quarts with filter
- Pioneer, 2.5 P, RWD, Standard, AX5: 10W-30, 4.0 quarts with filter
- Pioneer, 4.0 S, 4WD, Automatic: 10W-30, 6.0 quarts with filter
- Pioneer, 4.0 S, 4WD, Standard: 10W-30, 6.0 quarts with filter
- Pioneer, 4.0 S, RWD, Automatic: 10W-30, 6.0 quarts with filter
- Pioneer, 4.0 S, RWD, Standard: 10W-30, 6.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, 2.5 P, 4WD, Automatic — 2.5L Eng | API - SAE 10W-30 | 4.00 QTS. | — | — |
| Base, 2.5 P, 4WD, Standard, AX4 — 2.5L Eng | API - SAE 10W-30 | 4.00 QTS. | — | — |
| Base, 2.5 P, 4WD, Standard, AX5 — 2.5L Eng | API - SAE 10W-30 | 4.00 QTS. | — | — |
| Base, 2.5 P, RWD, Automatic — 2.5L Eng | API - SAE 10W-30 | 4.00 QTS. | — | — |
| Base, 2.5 P, RWD, Standard, AX4 — 2.5L Eng | API - SAE 10W-30 | 4.00 QTS. | — | — |
| Base, 2.5 P, RWD, Standard, AX5 — 2.5L Eng | API - SAE 10W-30 | 4.00 QTS. | — | — |
| Base, 4.0 S, 4WD, Automatic — 4.0L Eng | API - SAE 10W-30 | 6.00 QTS. | — | — |
| Base, 4.0 S, 4WD, Standard — 4.0L Eng | API - SAE 10W-30 | 6.00 QTS. | — | — |
| Base, 4.0 S, RWD, Automatic — 4.0L Eng | API - SAE 10W-30 | 6.00 QTS. | — | — |
| Base, 4.0 S, RWD, Standard — 4.0L Eng | API - SAE 10W-30 | 6.00 QTS. | — | — |
| Eliminator, 4WD, Automatic — 4.0L Eng | API - SAE 10W-30 | 6.00 QTS. | — | — |
| Eliminator, 4WD, Standard — 4.0L Eng | API - SAE 10W-30 | 6.00 QTS. | — | — |
| Eliminator, RWD, Automatic — 4.0L Eng | API - SAE 10W-30 | 6.00 QTS. | — | — |
| Eliminator, RWD, Standard — 4.0L Eng | API - SAE 10W-30 | 6.00 QTS. | — | — |
| Pioneer, 2.5 P, 4WD, Automatic — 2.5L Eng | API - SAE 10W-30 | 4.00 QTS. | — | — |
| Pioneer, 2.5 P, 4WD, Standard, AX4 — 2.5L Eng | API - SAE 10W-30 | 4.00 QTS. | — | — |
| Pioneer, 2.5 P, 4WD, Standard, AX5 — 2.5L Eng | API - SAE 10W-30 | 4.00 QTS. | — | — |
| Pioneer, 2.5 P, RWD, Automatic — 2.5L Eng | API - SAE 10W-30 | 4.00 QTS. | — | — |
| Pioneer, 2.5 P, RWD, Standard, AX4 — 2.5L Eng | API - SAE 10W-30 | 4.00 QTS. | — | — |
| Pioneer, 2.5 P, RWD, Standard, AX5 — 2.5L Eng | API - SAE 10W-30 | 4.00 QTS. | — | — |
| Pioneer, 4.0 S, 4WD, Automatic — 4.0L Eng | API - SAE 10W-30 | 6.00 QTS. | — | — |
| Pioneer, 4.0 S, 4WD, Standard — 4.0L Eng | API - SAE 10W-30 | 6.00 QTS. | — | — |
| Pioneer, 4.0 S, RWD, Automatic — 4.0L Eng | API - SAE 10W-30 | 6.00 QTS. | — | — |
| Pioneer, 4.0 S, RWD, Standard — 4.0L Eng | API - SAE 10W-30 | 6.00 QTS. | — | — |
More factory specs & repair guides for your Comanche
🛞 1991 Jeep Comanche Tire Size & Pressure →🌧️ 1991 Jeep Comanche Wiper Blade Sizes →💡 1991 Jeep Comanche Light Bulb Sizes →📖 1991 Jeep Comanche Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
10.0 quarts (9.46 L) — 50/50 mixture of All Season Coolant and water. Includes: 2.3 qts. for the engine coolant recovery tank.
Frequently asked questions
What type of oil does a 1991 Jeep Comanche take?
It depends on the engine: Base, 2.5 P, 4WD, Automatic uses 10W-30; Base, 2.5 P, 4WD, Standard, AX4 uses 10W-30; Base, 2.5 P, 4WD, Standard, AX5 uses 10W-30; Base, 2.5 P, RWD, Automatic uses 10W-30; Base, 2.5 P, RWD, Standard, AX4 uses 10W-30; Base, 2.5 P, RWD, Standard, AX5 uses 10W-30; Base, 4.0 S, 4WD, Automatic uses 10W-30; Base, 4.0 S, 4WD, Standard uses 10W-30; Base, 4.0 S, RWD, Automatic uses 10W-30; Base, 4.0 S, RWD, Standard uses 10W-30; Eliminator, 4WD, Automatic uses 10W-30; Eliminator, 4WD, Standard uses 10W-30; Eliminator, RWD, Automatic uses 10W-30; Eliminator, RWD, Standard uses 10W-30; Pioneer, 2.5 P, 4WD, Automatic uses 10W-30; Pioneer, 2.5 P, 4WD, Standard, AX4 uses 10W-30; Pioneer, 2.5 P, 4WD, Standard, AX5 uses 10W-30; Pioneer, 2.5 P, RWD, Automatic uses 10W-30; Pioneer, 2.5 P, RWD, Standard, AX4 uses 10W-30; Pioneer, 2.5 P, RWD, Standard, AX5 uses 10W-30; Pioneer, 4.0 S, 4WD, Automatic uses 10W-30; Pioneer, 4.0 S, 4WD, Standard uses 10W-30; Pioneer, 4.0 S, RWD, Automatic uses 10W-30; Pioneer, 4.0 S, RWD, Standard uses 10W-30.
What is the oil capacity of a 1991 Jeep Comanche?
Oil capacity depends on the engine: Base, 2.5 P, 4WD, Automatic holds 4.0 quarts with filter; Base, 2.5 P, 4WD, Standard, AX4 holds 4.0 quarts with filter; Base, 2.5 P, 4WD, Standard, AX5 holds 4.0 quarts with filter; Base, 2.5 P, RWD, Automatic holds 4.0 quarts with filter; Base, 2.5 P, RWD, Standard, AX4 holds 4.0 quarts with filter; Base, 2.5 P, RWD, Standard, AX5 holds 4.0 quarts with filter; Base, 4.0 S, 4WD, Automatic holds 6.0 quarts with filter; Base, 4.0 S, 4WD, Standard holds 6.0 quarts with filter; Base, 4.0 S, RWD, Automatic holds 6.0 quarts with filter; Base, 4.0 S, RWD, Standard holds 6.0 quarts with filter; Eliminator, 4WD, Automatic holds 6.0 quarts with filter; Eliminator, 4WD, Standard holds 6.0 quarts with filter; Eliminator, RWD, Automatic holds 6.0 quarts with filter; Eliminator, RWD, Standard holds 6.0 quarts with filter; Pioneer, 2.5 P, 4WD, Automatic holds 4.0 quarts with filter; Pioneer, 2.5 P, 4WD, Standard, AX4 holds 4.0 quarts with filter; Pioneer, 2.5 P, 4WD, Standard, AX5 holds 4.0 quarts with filter; Pioneer, 2.5 P, RWD, Automatic holds 4.0 quarts with filter; Pioneer, 2.5 P, RWD, Standard, AX4 holds 4.0 quarts with filter; Pioneer, 2.5 P, RWD, Standard, AX5 holds 4.0 quarts with filter; Pioneer, 4.0 S, 4WD, Automatic holds 6.0 quarts with filter; Pioneer, 4.0 S, 4WD, Standard holds 6.0 quarts with filter; Pioneer, 4.0 S, RWD, Automatic holds 6.0 quarts with filter; Pioneer, 4.0 S, RWD, Standard holds 6.0 quarts with filter.
How often should I change the oil in my 1991 Jeep Comanche?
Most 1991 Jeep Comanche 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 1991 Jeep Comanche?
Yes. 10W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1991 Jeep Comanche. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.