1988 Mitsubishi Galant Sigma Oil Type & Capacity: 20W-20 (4.0 quarts)
The 1988 Mitsubishi Galant Sigma takes 20W-20 motor oil — 4.0 quarts with a filter change, per the factory service manual.
Factory-spec answer
20W-20 — 4.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Automatic — 3.0L Eng | SAE 20W-20/30/40 (0Deg.F to Above 120Deg.F), 10W-30/40/50 (-10Deg.F to Above 120Deg.F), 5W-20/30/40 (Below -20Deg.F to 60Deg.F) | 4.00 QTS. | — | — |
| Standard — 3.0L Eng | SAE 20W-20/30/40 (0Deg.F to Above 120Deg.F), 10W-30/40/50 (-10Deg.F to Above 120Deg.F), 5W-20/30/40 (Below -20Deg.F to 60Deg.F) | 4.00 QTS. | — | — |
More factory specs & repair guides for your Galant Sigma
🛞 1988 Mitsubishi Galant Sigma Tire Size & Pressure →🌧️ 1988 Mitsubishi Galant Sigma Wiper Blade Sizes →💡 1988 Mitsubishi Galant Sigma Light Bulb Sizes →📖 1988 Mitsubishi Galant Sigma Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
9.7 quarts (9.17 L) — 50/50 mixture of High quality ethylene-glycol antifreeze and water
Frequently asked questions
What type of oil does a 1988 Mitsubishi Galant Sigma take?
The 1988 Mitsubishi Galant Sigma takes 20W-20 motor oil (SAE 20W-20/30/40 (0Deg.F to Above 120Deg.F), 10W-30/40/50 (-10Deg.F to Above 120Deg.F), 5W-20/30/40 (Below -20Deg.F to 60Deg.F)), per the factory service manual.
What is the oil capacity of a 1988 Mitsubishi Galant Sigma?
The 1988 Mitsubishi Galant Sigma oil capacity is 4.0 quarts with a filter change.
How often should I change the oil in my 1988 Mitsubishi Galant Sigma?
Most 1988 Mitsubishi Galant Sigma 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 1988 Mitsubishi Galant Sigma?
Yes. 20W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1988 Mitsubishi Galant Sigma. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.