Quote:
Originally Posted by Diesel_Dave
Don't get me wrong, I'm not advocating going 20 mph on the freeway. But if we're talking strictly what's best for FE (with a manual tranny) slower is almost always better.
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Instantaneous MPG on my Focus, with the cruise set at 35MPH was high 50s ... of course the engine probably wouldn't be too happy operating at 1000RPM for too long .
Edit - let me clarify - that was a PERFECTLY flat roads in the woods so there was no head/tail wind or hills. I did both directions.