What kind of milage are you getting with your super duty? Empty? Loaded with how much? Which engine is it too?

freinds 04 6.0L 4x4 with 35's is getting 14 around town before the adjustment for the larger tires, haven't got to run it to mammoth yet but his old 7.3L excursion got 14ish towing a 16ft trailer with 3 sleds on it.

my 96 and my 97 got 13/14 perty much all the time. i have the same camper and now a 2000 duall wheel and get 11 empty or loaded. my truck weighs in at 12500 as a dd. and then i hook up to trailers. full load is 18 plus and it does drop against heavy wind or big hills. itll go to 10ish

Average around 15ish around town. That's with an 03 PSD and me keeping my foot out of the pedal. If I hot rod it, I'll pull more like 12-13 around town.
Best I've gotten on the Highway was 23mpg over about a 300 mile run. That was before my latest PCM flash, i've noticed my mileage is suffering a little since this last flash. Need to check it though.

my 04/04 auto 6.0 gets 14-15 town and 16's on the highway. Towing is about 10-12.

Check www.thedieselstop.com for lots of info.

Dick

I'm still getting 16 around town with my 93 pre-powerstroke (non-turbo)
I get 18-23 on the road depending on what I am towing or how I am loaded.
So the question I gota ask is - without a computer - and no turbo - how
come I get better milage than the new engine? Mines wimpy in the hills
but unloaded I gota make sure I don't pull the tires off the rims....
202K miles so far.

The biggest hit I get in milege is when the E4OD transmission computer
get confused and does not cause the torqe converter to set right. About
time to rebuild that tranny again...

I'm getting 18 around town now - I had a problem where in AZ - they would do a no
load high RPM snap test for emissions and it would screw up my fuel system every time.
After four years and four thousand dollar fixes I put my foot down and said if they
broke it again they were buying the truck - after six hours of run around I finally got
one guy in AZ, the only one, to admit that the pre-power strokes have an govenor problem
that causes the injector pre-pump to over presurize the fuel system - and break it.

This was the cause of many fires and was a major reason for the move to the new
7.3 power stroke. The fuel return hoses are just low presure rubber and would get
presurized to 60+ psi and break.

Now that I can bypass the yearly test I have put a new set of injectors in - only
$25 each for the old engine - along with an external trany fluid filter - I am now
getting over 18 around town with 210K. This is the same mileage I was getting when
it was new. Nothing rusts out here in AZ so I figure that I can keep this rig running
for another five or six years.

I usually get 16mpg on average. My wife drove it to Utah once and managed to get 21. Guess she has a lighter foot than me!

Averaging 15 in town...19 on highway (17 pulling 5th wheel)
Edge Chip and open filter intake