Where can you get one of those trucks?

My 8.2 - 8.5 is figured on pump to pump...... it doesn't even have a computer LOL
I pull a dry bulk tanker from Chicago to S. Texas loaded at 4,000lbs and come back empty in a 99FLD Flat-top with a S-60, 10spd and 3.90 rears (hence the 63mph LOL)

Pays $3.75 loaded and just FSC coming back. I do ok

Just look on any downhill run on I-25 in Wyoming. Just make sure you turn OFF the MPG reading on the ensuing uphill part.

Actually, it looks like this tractor is getting about 6.5 (Imperial) average with the loads I am pulling. That is one of the reasons for getting the new tractor. This one has the wrong gears (3.90's) for the freeways.

I am running about 1490 rpm at 65 mph. Now, it pulls like a freight train when I hammer down to get past the governed trucks ( I opened mine right up ) but I can accomplish that with a downshift if I go to 8th direct when I pass.

I am going to get an 18 speed autoshift in the new tractor. (gloss went off the shifting apple about 2 million miles ago )

The IH I just sold had 3.23's and a auto-shift. I hated it at first, but grew to LOVE it.
It was a GEN2 series with the clutch pedal still and once I got the MANUAL mode down, it was the same as driving a reg stick w/o the shifting, missing a gear or grinding.

Just think of this, I was running a load of casustic across I80 from North Platte to the Bay. Not once did it miss a shift going up or coming down a hill, It was GREAT!!!!!! It's when you dont have to worry about hitting it juuuust right to slide it into the next gear when pulling 80,000lbs up Donner :)

But I'll bet you had a relatively massive amount of idle time that lowered your avg. MPG quite significantly. I, on the other hand, have very little idle time, comparatively, so I should get that much better avg. MPG.

not all that much, around 18-24hr's a week back then unless you count driving in Los Angeles as idle time. r avg load back then was around 42-44,000 lb's right now r 09 pro-star running with 24,814 lb. @ avg of 62.2 mph (filled up in Minooka, IL to Cheyenne, WY.) 921 ml used 137 gl. that's 6.72 mpg. with 1/2 hr of idle time for driver change.

WOW, that Pro-Star sure is not doing so great on the MPG. My dad has been driving for Wal-MArt for about 20yrs now and his 07 Pro Star is averaging 7.2 - 7.5mpg ????

ya i know and thats with an ISX 450 untrashift and super (stuped) singles btw the dash saids something like 7.5 but i track it from fuel stop to fuel stop.

That is the gear ratio I am thinking of running.

What did you get for Fuel economy on average? Tire size? And RPM at 65 mph? Which HP engine did you have? I am getting the Maxxforce 475 HP.