Remember the more boost the more fuel is being burnt. Ideally you want 1500 rpm at speed. I am at 1500rpm at 55mph in my 87 300d with the 5 speed.
-Rolf On 07/28/2011 07:08 PM, Michael Canfield wrote:
I was thinking the 85 gears would get me better fuel economy at highway speeds. Maybe at the cost of worse mileage overall if the turbo isn't spooled up enough at average travel speeds.
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