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Old 11-20-2001, 09:09 AM
loubapache loubapache is offline
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Join Date: Jul 2001
Location: Western Michigan
Posts: 1,080
I routinely get 25 MPG at 70 - 75 MPH when I take my trips to Chicago from my 1991 300E (automatic). I usually fill up before I leave, reset the trip meter, add some gas in Indiana on the way back, and refill again when I got home. The drive train is very smooth and is filled with synthetic fluid in engine, transmission, and rear differential.
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