General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.

Gas

Old Feb 1, 2007 | 02:43 PM
  #11  
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I get 32mpg in one car, and 29 in the other. Both supercharged. Time to remind everyone that 91 octane MINIMUM is required for supercharged engines here.

Moving this topic to General Chat. This isn't a mechanical problem.
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Old Feb 1, 2007 | 03:02 PM
  #12  
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On premium gas I average 17-19 mpg in the city and 25-28 on the highway. I'm lead footed though lol
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