I thought it was funny - real world - I'm in cruising in 2nd or 3rd at those speeds. How is it clearer to have a 200 rpm difference? Is the low speed to discount the effect of wind resistance? To make our point/observation - you will have better fuel economy at 45 mph in 5th gear than 45 mph in 3rd. Are you not closer to the torque peak in 3rd gear?
Yes, I would think that lower vehicle speeds and lower engine speeds would yield lower gasoline comsumption.
I did set the cruise today at 1500 in 5th - works well to keep out of trouble if the copper is behind you.
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