Thanks for the info. If you go to the Mobil 1 website it says Mobil 1 EP is right for your car...
http://www.mobiloil.com/usa-english/...ilOption2.aspx
What's the right oil for my car?
Our products in the viscosity right for your vehicle
We've taken what you told us about your vehicle and driving conditions, and using an auto industry database, have determined our products in the viscosity recommended by your vehicle manufacturer. These products are shown categorized by the level of protection they provide. To learn more about a product, click its name.
Current Vehicle:
Year: 2006
Make: Hummer
Model: H3
Engine Type: 5cyl. 3.5Liter
Ultimate Protection
Mobil 1 Extended Performance 5W-30
Mobil 1 Extended Performance 5W-30 fully synthetic motor oil is designed for today's longer service intervals. It provides guaranteed performance and protection for 15,000 miles or one year. Mobil 1 Extended Performance products with the Advanced SuperSyn System contain extra performance additives to help deliver outstanding engine protection.
Mobil 1 5W-30
A fully synthetic motor oil, Mobil 1 5W-30 with SuperSyn Technology, is the approved and the first choice of many premium car manufacturers, including Corvette.
Mobil 1 Truck & SUV 5W-30
A fully synthetic motor oil, Mobil 1? Truck & SUV 5W-30 is engineered for gasoline engines in hard-working trucks, vans, SUVs and recreational vehicles.