2003 Hyundai Sonata Oil Type & Capacity
The 2003 Hyundai Sonata oil type depends on the engine: the Base, 2.4 S, Automatic takes 10W-30 (4.5 quarts qt with filter); the Base, 2.4 S, Standard takes 10W-30 (4.5 quarts qt with filter); the Base, 2.7 H takes 10W-30 (4.77 quarts qt with filter); the GLS, Automatic takes 10W-30 (4.77 quarts qt with filter); the GLS, Standard takes 10W-30 (4.77 quarts qt with filter); the LX, Automatic takes 10W-30 (4.77 quarts qt with filter); the LX, Standard takes 10W-30 (4.77 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Base, 2.4 S, Automatic: 10W-30, 4.5 quarts with filter
- Base, 2.4 S, Standard: 10W-30, 4.5 quarts with filter
- Base, 2.7 H: 10W-30, 4.77 quarts with filter
- GLS, Automatic: 10W-30, 4.77 quarts with filter
- GLS, Standard: 10W-30, 4.77 quarts with filter
- LX, Automatic: 10W-30, 4.77 quarts with filter
- LX, Standard: 10W-30, 4.77 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, 2.4 S, Automatic — 2.4L Eng | API - SAE 10W-30,10W-40 or 10W-50 | 4.50 QTS. | 4.20 QTS. | — |
| Base, 2.4 S, Standard — 2.4L Eng | API - SAE 10W-30,10W-40 or 10W-50 | 4.50 QTS. | 4.20 QTS. | — |
| Base, 2.7 H — 2.7L Eng | API - SAE 10W-30,10W-40 or 10W-50 | 4.77 QTS. | 4.45 QTS. | — |
| GLS, Automatic — 2.7L Eng | API - SAE 10W-30,10W-40 or 10W-50 | 4.77 QTS. | 4.45 QTS. | — |
| GLS, Standard — 2.7L Eng | API - SAE 10W-30,10W-40 or 10W-50 | 4.77 QTS. | 4.45 QTS. | — |
| LX, Automatic — 2.7L Eng | API - SAE 10W-30,10W-40 or 10W-50 | 4.77 QTS. | 4.45 QTS. | — |
| LX, Standard — 2.7L Eng | API - SAE 10W-30,10W-40 or 10W-50 | 4.77 QTS. | 4.45 QTS. | — |
Complete Oil Change Bundle for 2003 Hyundai Sonata
Everything you need delivered in one order. Pre-matched to your factory spec (10W-30, 4.5 quarts).
As an Amazon Associate we earn from qualifying purchases. Prices shown are real-time retail estimates.
Buy the right oil & filter for your Sonata
🛒 Buy 10W-30 Full Synthetic Oil (4.5 quarts needed) on AmazonPopular Full Synthetic Brands (10W-30):
As an Amazon Associate we earn from qualifying purchases made through these links.
More factory specs & repair guides for your Sonata
🛞 2003 Hyundai Sonata Tire Size & Pressure →🌧️ 2003 Hyundai Sonata Wiper Blade Sizes →💡 2003 Hyundai Sonata Light Bulb Sizes →📖 2003 Hyundai Sonata Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
7.7 quarts (7.28 L) — 50/50 mixture of Ethylene Glycol Antifreeze and water. The engine coolant should be compatible with aluminum engine parts.
Frequently asked questions
What type of oil does a 2003 Hyundai Sonata take?
It depends on the engine: Base, 2.4 S, Automatic uses 10W-30; Base, 2.4 S, Standard uses 10W-30; Base, 2.7 H uses 10W-30; GLS, Automatic uses 10W-30; GLS, Standard uses 10W-30; LX, Automatic uses 10W-30; LX, Standard uses 10W-30.
What is the oil capacity of a 2003 Hyundai Sonata?
Oil capacity depends on the engine: Base, 2.4 S, Automatic holds 4.5 quarts with filter; Base, 2.4 S, Standard holds 4.5 quarts with filter; Base, 2.7 H holds 4.77 quarts with filter; GLS, Automatic holds 4.77 quarts with filter; GLS, Standard holds 4.77 quarts with filter; LX, Automatic holds 4.77 quarts with filter; LX, Standard holds 4.77 quarts with filter.
How often should I change the oil in my 2003 Hyundai Sonata?
Most 2003 Hyundai Sonata 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 — Hyundai recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2003 Hyundai Sonata?
Yes. 10W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2003 Hyundai Sonata. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.