1990 Dodge Omni Oil Type & Capacity
The 1990 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 | 4.00 QTS. | — | — |
| Standard | API - SAE 5W-30 | 4.00 QTS. | — | — |
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More specs & repair guides for your Omni
1990 Dodge Omni factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site 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.. Includes: 1 qt. in the engine coolant recovery tank.
Frequently asked questions
What type of oil does a 1990 Dodge Omni take?
The 1990 Dodge Omni takes 5W-30 motor oil (API - SAE 5W-30), per the factory service manual.
How much oil does a 1990 Dodge Omni take?
The 1990 Dodge Omni holds 4.0 quarts with a filter change.
Can I use synthetic oil in my 1990 Dodge Omni?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1990 Dodge Omni. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.