Thread: Can I use standard 5W30 Pennzoil in the H3?
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Old 01-27-2006, 10:50 PM
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Mike E Mike E is offline
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I know this may be a stupid question for most but do I have to run synthetic in the H3? The dealer said they use synthetic but I always used Pennzoil motor oil in my other cars and was fine. When I looked at the quart it didn't say anything about meeting the GM "standards" but it did have the star on front that it meets the petrolium blah blah blah..

Any info is appreciated. Thanks.
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2008 Hummer H3 Alpha Adventure. Graphite Gray Metallic.
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