1990 Mitsubishi Galant Oil Type & Capacity
The 1990 Mitsubishi Galant oil type depends on the engine: the Base, Automatic takes 20W-20 (3.92 quarts qt with filter); the Base, Standard takes 20W-20 (3.92 quarts qt with filter); the GS, Automatic takes 20W-20 (4.42 quarts qt with filter); the GS, Standard takes 20W-20 (4.42 quarts qt with filter); the GSX takes 20W-20 (4.42 quarts qt with filter); the LS takes 20W-20 (3.92 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Base, Automatic: 20W-20, 3.92 quarts with filter
- Base, Standard: 20W-20, 3.92 quarts with filter
- GS, Automatic: 20W-20, 4.42 quarts with filter
- GS, Standard: 20W-20, 4.42 quarts with filter
- GSX: 20W-20, 4.42 quarts with filter
- LS: 20W-20, 3.92 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, Automatic — O.H.C.- SOHC | API - SAE 20W-20/40/50 (32Deg.F to Above 120Deg.F), 10W-30/40/50 (-10Deg.F to Above 120Deg.F), 5W-30 (Below -20Deg.F to 60Deg.F) | 3.92 QTS. | 3.50 QTS. | — |
| Base, Standard — O.H.C.- SOHC | API - SAE 20W-20/40/50 (32Deg.F to Above 120Deg.F), 10W-30/40/50 (-10Deg.F to Above 120Deg.F), 5W-30 (Below -20Deg.F to 60Deg.F) | 3.92 QTS. | 3.50 QTS. | — |
| GS, Automatic — O.H.C.- DOHC | API - SAE 20W-20/40/50 (32Deg.F to Above 120Deg.F), 10W-30/40/50 (-10Deg.F to Above 120Deg.F), 5W-30 (Below -20Deg.F to 60Deg.F) | 4.42 QTS. | 4.00 QTS. | — |
| GS, Standard — O.H.C.- DOHC | API - SAE 20W-20/40/50 (32Deg.F to Above 120Deg.F), 10W-30/40/50 (-10Deg.F to Above 120Deg.F), 5W-30 (Below -20Deg.F to 60Deg.F) | 4.42 QTS. | 4.00 QTS. | — |
| GSX — O.H.C.- DOHC | API - SAE 20W-20/40/50 (32Deg.F to Above 120Deg.F), 10W-30/40/50 (-10Deg.F to Above 120Deg.F), 5W-30 (Below -20Deg.F to 60Deg.F) | 4.42 QTS. | 4.00 QTS. | — |
| LS — O.H.C.- SOHC | API - SAE 20W-20/40/50 (32Deg.F to Above 120Deg.F), 10W-30/40/50 (-10Deg.F to Above 120Deg.F), 5W-30 (Below -20Deg.F to 60Deg.F) | 3.92 QTS. | 3.50 QTS. | — |
More factory specs & repair guides for your Galant
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Coolant capacity
7.6 quarts (7.19 L) — 50/50 mixture of Ethylene Glycol Antifreeze and water. Includes: .7 qt. in reserve tank.
Frequently asked questions
What type of oil does a 1990 Mitsubishi Galant take?
It depends on the engine: Base, Automatic uses 20W-20; Base, Standard uses 20W-20; GS, Automatic uses 20W-20; GS, Standard uses 20W-20; GSX uses 20W-20; LS uses 20W-20.
What is the oil capacity of a 1990 Mitsubishi Galant?
Oil capacity depends on the engine: Base, Automatic holds 3.92 quarts with filter; Base, Standard holds 3.92 quarts with filter; GS, Automatic holds 4.42 quarts with filter; GS, Standard holds 4.42 quarts with filter; GSX holds 4.42 quarts with filter; LS holds 3.92 quarts with filter.
How often should I change the oil in my 1990 Mitsubishi Galant?
Most 1990 Mitsubishi Galant 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 — Mitsubishi recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1990 Mitsubishi Galant?
Yes. 20W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1990 Mitsubishi Galant. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.