1985 Isuzu I-Mark Oil Type & Capacity
The 1985 Isuzu I-Mark oil type depends on the engine: the 2D Coupe, Automatic takes 5W-20 (3.8 quarts qt with filter); the 2D Coupe, Standard, MSG4K takes 5W-20 (3.8 quarts qt with filter); the 2D Coupe, Standard, MSG5K takes 5W-20 (3.8 quarts qt with filter); the 2D Hatchback, Automatic takes 5W-20 (3.4 quarts qt with filter); the 2D Hatchback, Standard takes 5W-20 (3.4 quarts qt with filter); the 4D Hatchback, Automatic takes 5W-20 (3.4 quarts qt with filter); the 4D Hatchback, Standard takes 5W-20 (3.4 quarts qt with filter); the 4D Sedan, Automatic takes 5W-20 (3.8 quarts qt with filter); the 4D Sedan, Standard, MSG4K takes 5W-20 (3.8 quarts qt with filter); the 4D Sedan, Standard, MSG5K takes 5W-20 (3.8 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- 2D Coupe, Automatic: 5W-20, 3.8 quarts with filter
- 2D Coupe, Standard, MSG4K: 5W-20, 3.8 quarts with filter
- 2D Coupe, Standard, MSG5K: 5W-20, 3.8 quarts with filter
- 2D Hatchback, Automatic: 5W-20, 3.4 quarts with filter
- 2D Hatchback, Standard: 5W-20, 3.4 quarts with filter
- 4D Hatchback, Automatic: 5W-20, 3.4 quarts with filter
- 4D Hatchback, Standard: 5W-20, 3.4 quarts with filter
- 4D Sedan, Automatic: 5W-20, 3.8 quarts with filter
- 4D Sedan, Standard, MSG4K: 5W-20, 3.8 quarts with filter
- 4D Sedan, Standard, MSG5K: 5W-20, 3.8 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| 2D Coupe, Automatic — 1.8L Eng | SAE 5W-20 (Below 20Deg.F), 5W-30 (Below 60Deg.F), 10W-30/40 (Above 0Deg.F), 20W-20/40/50 (Above 20Deg.F), 30 (Above 40Deg.F). | — | 3.40 QTS. | — |
| 2D Coupe, Standard, MSG4K — 1.8L Eng | SAE 5W-20 (Below 20Deg.F), 5W-30 (Below 60Deg.F), 10W-30/40 (Above 0Deg.F), 20W-20/40/50 (Above 20Deg.F), 30 (Above 40Deg.F). | — | 3.40 QTS. | — |
| 2D Coupe, Standard, MSG5K — 1.8L Eng | SAE 5W-20 (Below 20Deg.F), 5W-30 (Below 60Deg.F), 10W-30/40 (Above 0Deg.F), 20W-20/40/50 (Above 20Deg.F), 30 (Above 40Deg.F). | — | 3.40 QTS. | — |
| 2D Hatchback, Automatic — 1.5L Eng | SAE 5W-20 (Below 20Deg.F), 5W-30 (Below 60Deg.F), 10W-30/40 (Above 0Deg.F), 20W-20/40/50 (Above 20Deg.F), 30 (Above 40Deg.F). | — | 3.00 QTS. | — |
| 2D Hatchback, Standard — 1.5L Eng | SAE 5W-20 (Below 20Deg.F), 5W-30 (Below 60Deg.F), 10W-30/40 (Above 0Deg.F), 20W-20/40/50 (Above 20Deg.F), 30 (Above 40Deg.F). | — | 3.00 QTS. | — |
| 4D Hatchback, Automatic — 1.5L Eng | SAE 5W-20 (Below 20Deg.F), 5W-30 (Below 60Deg.F), 10W-30/40 (Above 0Deg.F), 20W-20/40/50 (Above 20Deg.F), 30 (Above 40Deg.F). | — | 3.00 QTS. | — |
| 4D Hatchback, Standard — 1.5L Eng | SAE 5W-20 (Below 20Deg.F), 5W-30 (Below 60Deg.F), 10W-30/40 (Above 0Deg.F), 20W-20/40/50 (Above 20Deg.F), 30 (Above 40Deg.F). | — | 3.00 QTS. | — |
| 4D Sedan, Automatic — 1.8L Eng | SAE 5W-20 (Below 20Deg.F), 5W-30 (Below 60Deg.F), 10W-30/40 (Above 0Deg.F), 20W-20/40/50 (Above 20Deg.F), 30 (Above 40Deg.F). | — | 3.40 QTS. | — |
| 4D Sedan, Standard, MSG4K — 1.8L Eng | SAE 5W-20 (Below 20Deg.F), 5W-30 (Below 60Deg.F), 10W-30/40 (Above 0Deg.F), 20W-20/40/50 (Above 20Deg.F), 30 (Above 40Deg.F). | — | 3.40 QTS. | — |
| 4D Sedan, Standard, MSG5K — 1.8L Eng | SAE 5W-20 (Below 20Deg.F), 5W-30 (Below 60Deg.F), 10W-30/40 (Above 0Deg.F), 20W-20/40/50 (Above 20Deg.F), 30 (Above 40Deg.F). | — | 3.40 QTS. | — |
More factory specs & repair guides for your I-Mark
🛞 1985 Isuzu I-Mark Tire Size & Pressure →🌧️ 1985 Isuzu I-Mark Wiper Blade Sizes →💡 1985 Isuzu I-Mark Light Bulb Sizes →📖 1985 Isuzu I-Mark Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
7.1 quarts (6.71 L) — 50/50 mixture of good quality ethylene-glycol antifreeze & water.
Frequently asked questions
What type of oil does a 1985 Isuzu I-Mark take?
It depends on the engine: 2D Coupe, Automatic uses 5W-20; 2D Coupe, Standard, MSG4K uses 5W-20; 2D Coupe, Standard, MSG5K uses 5W-20; 2D Hatchback, Automatic uses 5W-20; 2D Hatchback, Standard uses 5W-20; 4D Hatchback, Automatic uses 5W-20; 4D Hatchback, Standard uses 5W-20; 4D Sedan, Automatic uses 5W-20; 4D Sedan, Standard, MSG4K uses 5W-20; 4D Sedan, Standard, MSG5K uses 5W-20.
What is the oil capacity of a 1985 Isuzu I-Mark?
Oil capacity depends on the engine: 2D Coupe, Automatic holds 3.8 quarts with filter; 2D Coupe, Standard, MSG4K holds 3.8 quarts with filter; 2D Coupe, Standard, MSG5K holds 3.8 quarts with filter; 2D Hatchback, Automatic holds 3.4 quarts with filter; 2D Hatchback, Standard holds 3.4 quarts with filter; 4D Hatchback, Automatic holds 3.4 quarts with filter; 4D Hatchback, Standard holds 3.4 quarts with filter; 4D Sedan, Automatic holds 3.8 quarts with filter; 4D Sedan, Standard, MSG4K holds 3.8 quarts with filter; 4D Sedan, Standard, MSG5K holds 3.8 quarts with filter.
How often should I change the oil in my 1985 Isuzu I-Mark?
Most 1985 Isuzu I-Mark 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 — Isuzu recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1985 Isuzu I-Mark?
Yes. 5W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1985 Isuzu I-Mark. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.