Just saw this Forum when I was browsing one day. Liked what I saw, so I joined.
I have a '97 Buick Park Ave, and can get up to 35mpg if I keep my speed between 60-68 on the hwy.
I think that is pretty good for my big boat! Some smaller, less luxurious cars get less mileage than that, so I'm happy.
Hope I can find information to even better the mpg.
Have a nice day,
Prof H