1998 Kia Sephia Oil Type & Capacity: 5W-30 (4.0 quarts)
The 1998 Kia Sephia takes 5W-30 motor oil — 4.0 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 4.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, Automatic | API - SAE 5W-30 (-20Deg.F to 35Deg.F), 10W-30 (-10Deg.F to 90Deg.F) | 4.00 QTS. | 3.80 QTS. | — |
| Base, Standard | API - SAE 5W-30 (-20Deg.F to 35Deg.F), 10W-30 (-10Deg.F to 90Deg.F) | 4.00 QTS. | 3.80 QTS. | — |
| LS, Automatic | API - SAE 5W-30 (-20Deg.F to 35Deg.F), 10W-30 (-10Deg.F to 90Deg.F) | 4.00 QTS. | 3.80 QTS. | — |
| LS, Standard | API - SAE 5W-30 (-20Deg.F to 35Deg.F), 10W-30 (-10Deg.F to 90Deg.F) | 4.00 QTS. | 3.80 QTS. | — |
More factory specs & repair guides for your Sephia
🛞 1998 Kia Sephia Tire Size & Pressure →🌧️ 1998 Kia Sephia Wiper Blade Sizes →💡 1998 Kia Sephia Light Bulb Sizes →📖 1998 Kia Sephia Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
6.3 quarts (5.96 L) — 50/50 mixture of Ethylene Glycol Antifreeze and water
Frequently asked questions
What type of oil does a 1998 Kia Sephia take?
The 1998 Kia Sephia takes 5W-30 motor oil (API - SAE 5W-30 (-20Deg.F to 35Deg.F), 10W-30 (-10Deg.F to 90Deg.F)), per the factory service manual.
What is the oil capacity of a 1998 Kia Sephia?
The 1998 Kia Sephia oil capacity is 4.0 quarts with a filter change, or 3.8 quarts without changing the filter.
How often should I change the oil in my 1998 Kia Sephia?
Most 1998 Kia Sephia 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 — Kia recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1998 Kia Sephia?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1998 Kia Sephia. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.