2003 Infiniti I35 Oil Type & Capacity: 5W-30 (4.25 quarts)
The 2003 Infiniti I35 takes 5W-30 motor oil — 4.25 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 4.25 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| I35 | API - SG/SH Energy Conserving I and II or API- SJ, Energy Conserving, ILSAC GF-I and GF-II, SAE 5W-30 | 4.25 QTS. | 3.90 QTS. | API - SAE 5W-30 is preferred for all ambient temperatures. SAE 10W-30, 10W-40 may be used if the ambient temperature is above 0Deg.F (-18Deg.C). |
More factory specs & repair guides for your I35
🛞 2003 Infiniti I35 Tire Size & Pressure →🌧️ 2003 Infiniti I35 Wiper Blade Sizes →💡 2003 Infiniti I35 Light Bulb Sizes →📖 2003 Infiniti I35 Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
8.1 quarts (7.66 L) — 50/50 mixture of NISSAN Long Life Antifreeze/Coolant or equivalent and demineralized or distilled water
Frequently asked questions
What type of oil does a 2003 Infiniti I35 take?
The 2003 Infiniti I35 takes 5W-30 motor oil (API - SG/SH Energy Conserving I and II or API- SJ, Energy Conserving, ILSAC GF-I and GF-II, SAE 5W-30), per the factory service manual.
What is the oil capacity of a 2003 Infiniti I35?
The 2003 Infiniti I35 oil capacity is 4.25 quarts with a filter change, or 3.9 quarts without changing the filter.
How often should I change the oil in my 2003 Infiniti I35?
Most 2003 Infiniti I35 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 — Infiniti recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2003 Infiniti I35?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2003 Infiniti I35. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.