hi tom - i noticed that you said that the 4.6 has plenty of horsepower,
that's what i thought, but found out different.
this is a 1993 lincoln towncar, with tow package and the 210 hp engine.
without towing anything, on the open highway @ 70, it will average 27
mpg, even with 150,000 miles on the engine.
i bought a 5 X 10 enclosed doolittle trailer and used the lincoln to
drag it to vegas and back for a furniture show. it was over 4500 miles
round trip. changed fluids and filter before i started out. going west
my gas mileage dropped from 27 to 10.4 mpg and coming back it went up
slightly to 11.3 the car had hardly any pickup through the mountains,
but yet the trailer seemed to roll free enough and would gain speed
quite easily coming down the mountains. i've hauled this trailer with
my old pickup that only gets 11.5 mpg and has a 400 under the hood and
it might drop it to 11.3 mpg dragging the same trailer.
so, why the big dip in gas mileage? when i pulled the trailer, the
lincoln only had about 100,000 miles on it. it driven 50,000 miles
since and have had no transmission problems and the transmission nor
engine has never been rebuilt. the gas mileage is consistent in the
so, this is what i had concluded. lincoln designed the engine and car
to function at it's best carrying itself. as soon as you pack on the
extra weight, it starts laboring and the gas mileage heads south. it
does it every time i carry much over 1000lbs in it, whether it's people
or product. crown vics probably will behave in a similar fashion. just
my .02 cents worth.
knowledge is power - growing old is mandatory - growing wise is optional