16-18mpg? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-10-2006, 11:38 AM   #11
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Mid 20'* at least in combined driving.
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Old 03-11-2006, 02:41 PM   #12
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I get 24-26 average in winter with my 88 Lesabre with 2.97 axle. That'* on my 40 miles commute, 70+MPH with stop lights. Even city, I've never gotten worse then around 22 MPG. A lot better then my 97 L67, but short of our 98 L36.

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Old 03-11-2006, 11:58 PM   #13
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Been averaging about 17 lately... thanks, GX3 and winter
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