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10-24-2007, 06:57 PM
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Hummer Professional
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Join Date: Oct 2007
Posts: 267
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Re: This Just In... All 2008's must run PREMIUM!
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10-24-2007, 07:00 PM
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Hummer Guru
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Join Date: May 2005
Location: Virginia Beach
Posts: 5,081
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Re: This Just In... All 2008's must run PREMIUM!
2000 miles in burning 87, no problems at all...no pings, no issues....
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10-24-2007, 07:09 PM
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Hummer Authority
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Join Date: Dec 2003
Location: New Braunfels/Canyon Lake, TX
Posts: 1,357
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Re: This Just In... All 2008's must run PREMIUM!
I agree. Was the engine in the 08 drastically changed from previous years? I've been running 87 in my 03 since day 1 with no issues.
Big question is - if you run 87 in an 08 and DO have issues, will your warranty still cover it?
Stacy
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10-25-2007, 01:04 AM
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Hummer Veteran
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Join Date: Dec 2006
Location: Huntsville, Al
Posts: 47
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Re: This Just In... All 2008's must run PREMIUM!
Quote:
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Originally Posted by devilsfan
I agree. Was the engine in the 08 drastically changed from previous years? I've been running 87 in my 03 since day 1 with no issues.
Big question is - if you run 87 in an 08 and DO have issues, will your warranty still cover it?
Stacy
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Yes, in the event you have an internal engine problem, the tech, or field rep would check the ECM history of knock detectors, and run a fuel quality test. I would make sure you had premium fuel in the tank in the event of a failure. I have seen warranty work declined for poor fuel quality!
Jimmy |
10-24-2007, 09:07 PM
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Hummer Authority
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Join Date: May 2006
Location: South Western PA
Posts: 1,433
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Re: This Just In... All 2008's must run PREMIUM!
Quote:
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Originally Posted by Agriv8r
2000 miles in burning 87, no problems at all...no pings, no issues....
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a tad over 1500 on my burning up the 87 octane and no pings or other issues. Maybe i'll dump in a load of hi-test and see how it runs....
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10-26-2007, 03:49 AM
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Hummer Veteran
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Join Date: Sep 2007
Location: Illinois
Posts: 38
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Re: This Just In... All 2008's must run PREMIUM!
after reading the instructions (owners manuel) it seems like gm has learned that we build or buy something first then read instructions later....checked the manual and sure as the sun comes up it says to run 91+ octane (premium fuel) did they "forget" to place this below the fuel gauge, or on the filler cap? I have owned several cars that required premium and all said it on the cluster. I drive a lot of miles and this will add up fast. Maybe this expains my consistant rough idle. 
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10-26-2007, 06:22 PM
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Hummer Guru
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Join Date: May 2005
Location: Virginia Beach
Posts: 5,081
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Re: This Just In... All 2008's must run PREMIUM!
Quote:
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Originally Posted by blackhawk29
after reading the instructions (owners manuel) it seems like gm has learned that we build or buy something first then read instructions later....
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