1990 Mitsubishi Pickup Oil Type & Capacity: 20W-20 (4.5 quarts)
The 1990 Mitsubishi Pickup takes 20W-20 motor oil — 4.5 quarts with a filter change, per the factory service manual.
Factory-spec answer
20W-20 — 4.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Mighty Max 1 Ton | 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) | 4.50 QTS. | 4.00 QTS. | API - SAE 5W-20 not recommended for sustained high speed vehicle operation. |
| Mighty Max, 2D Pickup Extra Cab, Automatic | 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) | 4.50 QTS. | 4.00 QTS. | API - SAE 5W-20 not recommended for sustained high speed vehicle operation. |
| Mighty Max, 2D Pickup Extra Cab, Standard | 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) | 4.50 QTS. | 4.00 QTS. | API - SAE 5W-20 not recommended for sustained high speed vehicle operation. |
| Mighty Max, 2D Pickup, 2.4 W, Automatic | 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) | 4.50 QTS. | 4.00 QTS. | API - SAE 5W-20 not recommended for sustained high speed vehicle operation. |
| Mighty Max, 2D Pickup, 2.4 W, Standard | 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) | 4.50 QTS. | 4.00 QTS. | API - SAE 5W-20 not recommended for sustained high speed vehicle operation. |
| Mighty Max, 2D Pickup, 3.0 S | 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) | 4.50 QTS. | 4.00 QTS. | API - SAE 5W-20 not recommended for sustained high speed vehicle operation. |
More factory specs & repair guides for your Pickup
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Coolant capacity
6.3 quarts (5.96 L) — 50/50 mixture of Ethylene Glycol Antifreeze and water. Includes: .5 qt. for coolant reserve tank.
Frequently asked questions
What type of oil does a 1990 Mitsubishi Pickup take?
The 1990 Mitsubishi Pickup takes 20W-20 motor oil (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)), per the factory service manual.
What is the oil capacity of a 1990 Mitsubishi Pickup?
The 1990 Mitsubishi Pickup oil capacity is 4.5 quarts with a filter change, or 4.0 quarts without changing the filter.
How often should I change the oil in my 1990 Mitsubishi Pickup?
Most 1990 Mitsubishi Pickup 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 Pickup?
Yes. 20W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1990 Mitsubishi Pickup. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.