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I'm referring to a pair of examples which are not the same engine.
The ordinary FWD Buick 3.8, and a road test of a Grand National. (I'm assuming the 44 mpg on the 5th wheel for the GN is far, far beyond the fuel economy of an common FWD Buick 3.8. My guess is that the common 3.8 gets 25-28 mpg hwy - maybe 30 at very best.)
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