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Thanks for the thread. It was interesting to see hwh mpg in the 30's, but these are "3800" engines and much newer cars than the mid-late 80's 3.8's.
Some people stated 17/27 which is pretty much what I got with my 88 Delta 88. I consider this typical fuel economy and would expect it to improve marginally 10-15 years later which was about where most of the cars were in that thread.
But there was not a single mention of anything above 40 mpg.
I'm going to have to find that road test of the GN where they said in the article that they got 44 mpg on the 5th wheel on the way to the strip.
As far as some kind of "manual transmission" optimized car, that pretty much has to be an impossibility. I cannot imagine a FWD Build LeSabre with a manual transmission. I mean, what would it be??? Any no sane cab company owner would ever buy a "stick shift!"
Its becoming clear that these high mileage variants were very rare since no one yet claims to know anything about them. It could very well be that they were part of a special Detroit experiment when they would put a limited number of "special cars" out in the market to see how they did.
What is the top GN site? There will be people that intimately know every road test of GNs that was ever published. Someone will surely remember that statement since it was so amazing.
(However, at the time I read it, I could have cared less since gas was cheap and the implications of high mileage meant absolutely nothing back then - it was a curiosity at best. Only after the advent of $4/gal gasoline and no advancements in modern car fuel economy, does that comment carry the weight that it should.)
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