On Fri, 29 May 2009 06:34:42 -0400, "Eisboch"
wrote:

Probably depends on the year. I was surprised that my wife's Navigator is
"rated" to tow 7400 lbs.
Don't think I'd want to though. A Navigator is basically a softly sprung
F-150.

The difference is the motor. Four cams, four valves per cylinder.
Hardly necessary for a glorified truck. Still, we got 175 000 out of
the first motor. The check engine light came on, so we found the
leaking valve guide. I figured the thing was about to begin to nickle
and dime us to death, so we put in a rebuilt motor. It might have gone
tens of thousands of miles more, maybe, if it hadn't been for that
light. We reused the old starter and it promply crapped out. The days
of five buck junkyard starters are long gone.

Casady