1988 Dodge Omni Oil Type & Capacity: 5W-30 (4.0 quarts)
The 1988 Dodge Omni 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 |
|---|---|---|---|---|
| Automatic | API - SAE 5W-30 (Below 100Deg.F), 10W-30 (Above 0Deg.F), 15W-40 (Above 10Deg. F), 30 (Above 20Deg.F) | 4.00 QTS. | — | — |
| Standard | API - SAE 5W-30 (Below 100Deg.F), 10W-30 (Above 0Deg.F), 15W-40 (Above 10Deg. F), 30 (Above 20Deg.F) | 4.00 QTS. | — | — |
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More factory specs & repair guides for your Omni
🛞 1988 Dodge Omni Tire Size & Pressure →🌧️ 1988 Dodge Omni Wiper Blade Sizes →💡 1988 Dodge Omni Light Bulb Sizes →📖 1988 Dodge Omni Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
9.0 quarts (8.51 L) — 50/50 mixture of water and Ethylene-Glycol Base Antifreeze, such as MOPAR, PRESTON II, PEAK, or antifreeze containing the Alugard 340-2 inhibitor system.
Frequently asked questions
What type of oil does a 1988 Dodge Omni take?
The 1988 Dodge Omni takes 5W-30 motor oil (API - SAE 5W-30 (Below 100Deg.F), 10W-30 (Above 0Deg.F), 15W-40 (Above 10Deg. F), 30 (Above 20Deg.F)), per the factory service manual.
What is the oil capacity of a 1988 Dodge Omni?
The 1988 Dodge Omni oil capacity is 4.0 quarts with a filter change.
How often should I change the oil in my 1988 Dodge Omni?
Most 1988 Dodge Omni 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 — Dodge recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1988 Dodge Omni?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1988 Dodge Omni. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.