1988 Isuzu I-Mark Oil Type & Capacity: 5W-30 (3.4 quarts)
The 1988 Isuzu I-Mark takes 5W-30 motor oil — 3.4 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 3.4 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, 2D Hatchback, 1.5 7, Automatic — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| Base, 2D Hatchback, 1.5 7, Standard — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| Base, 2D Hatchback, 1.5 9 — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| Base, 4D Sedan, 1.5 7, Automatic — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| Base, 4D Sedan, 1.5 7, Standard — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| Base, 4D Sedan, 1.5 9 — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| LS — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| S, 2D Hatchback, Automatic — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| S, 2D Hatchback, Standard — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| S, 4D Sedan, Automatic — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| S, 4D Sedan, Standard — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| XS, 2D Hatchback, Automatic — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| XS, 2D Hatchback, Standard — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| XS, 4D Sedan, Automatic — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
| XS, 4D Sedan, Standard — 1.5L Eng | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F). | 3.40 QTS. | 3.00 QTS. | — |
Complete Oil Change Bundle for 1988 Isuzu I-Mark
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More factory specs & repair guides for your I-Mark
🛞 1988 Isuzu I-Mark Tire Size & Pressure →🌧️ 1988 Isuzu I-Mark Wiper Blade Sizes →💡 1988 Isuzu I-Mark Light Bulb Sizes →📖 1988 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
6.8 quarts (6.43 L) — 50/50 mixture of good quality ethylene-glycol antifreeze & water.
Frequently asked questions
What type of oil does a 1988 Isuzu I-Mark take?
The 1988 Isuzu I-Mark takes 5W-30 motor oil (SAE 5W-30 (Below -20Deg.F to Above 100Deg.F), 10W-30 (0Deg.F to Above 100Deg.F), 30 (40Deg.F to Above 100Deg.F), 15W-40, 20W-40/50 (10Deg.F to Above 100Deg.F).), per the factory service manual.
What is the oil capacity of a 1988 Isuzu I-Mark?
The 1988 Isuzu I-Mark oil capacity is 3.4 quarts with a filter change, or 3.0 quarts without changing the filter.
How often should I change the oil in my 1988 Isuzu I-Mark?
Most 1988 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 1988 Isuzu I-Mark?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1988 Isuzu I-Mark. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.