Hummer H3 4WD Engine Oil Specs

The Hummer H3 4WD was produced from 2006 to 2010. This model typically uses 5W-30 full synthetic engine oil — a specification common to most Hummer H3 -series vehicles.

Selecting the correct oil viscosity for your Hummer H3 4WD is essential. Using a grade that is too thin reduces protection at operating temperature, while too thick an oil impairs cold-start flow and reduces fuel economy. Always match the exact grade shown for your specific model year.

The recommended oil change interval for the Hummer H3 4WD is every 7,500 miles or 12 months. Under severe driving conditions — track use, towing, or frequent cold starts — shorten this interval by 25–30%.

When servicing your Hummer H3 4WD, always replace the oil filter at every oil change. Using a quality filter — such as the Mann or Mahle filters specified for Hummer engines — ensures proper oil pressure and prevents unfiltered oil from circulating through the engine.

Oil change costs for the Hummer H3 4WD at a US dealership or independent European specialist typically range from $120 to $200 for a full synthetic service. DIY oil changes cost approximately $60–$90 in parts (oil + filter) and take about 30 minutes with the right tools.

Always consult your vehicle's owner's manual to confirm the exact specification for your specific trim and engine variant, as some Hummer H3 4WD configurations may have different requirements.