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#1
05-27-2026, 11:09 AM
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2006 lecurne mileage
Have an 06 buick with the 3800. Mileage was never great 27 when I got it but it has been dropping slowly. Getting 24 now. I did get an O2 sensor error awhile ago but it went away on its own. It has 98k on it I was just wondering if anyone has just replaced the sensors with new and was able to get the mileage back up. If so which brand is the best? I know this has to be running rich, had a 3800 in a 2000 Lesabre that got as good as 36 on a good day and almost always over 30. Same motor, bigger car.
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