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#17
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I remember way back when I used to do my own tune up, timing and all. Now I
don't even recognize what is under the hood. "Percival P. Cassidy" > wrote in message news > On 07/19/05 10:25 am Richard tossed the following ingredients into the > ever-growing pot of cybersoup: > >>>BTW, does the grade (or brand) of gasoline affect mpg? I sometimes use >>>89, but mostly 87. > >> No, except if the motor is into serious knocking. Too much octane is a >> waste of money and resources. > > the Owner's Manual for our '02 300M says 87 is acceptable, but 89 is > preferable -- but doesn't say why. > > Perce |
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