2003 Hummer H2 Oil Type & Capacity
The 2003 Hummer H2 takes 5W-30 motor oil — 6.0 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 6.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| H2 | SAE 5W-30 | 6.00 QTS. | — | Use oil that has been certified by the American Petroleum Institute. For areas of extreme cold, where temperatures fall below -20Deg.F (-29Deg.C), it is recommended a SAE 5W-30 synthetic oil or a SAE 10W-30 oil. Both will provide easier cold starting and better protection for your engine at extremely low temperatures. |
Buy the right oil
Buy 5W-30 motor oil on Amazon2003 Hummer H2 oil filter on AmazonAs an Amazon Associate we earn from qualifying purchases made through these links.
More specs & repair guides for your H2
2003 Hummer H2 factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
14.8 quarts (14 L) — 50/50 mixture of DEX-COOL and drinkable water
Frequently asked questions
What type of oil does a 2003 Hummer H2 take?
The 2003 Hummer H2 takes 5W-30 motor oil (SAE 5W-30), per the factory service manual.
How much oil does a 2003 Hummer H2 take?
The 2003 Hummer H2 holds 6.0 quarts with a filter change.
Can I use synthetic oil in my 2003 Hummer H2?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2003 Hummer H2. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.