OK guys....
2006 Mega Cab 2wd with 13k on it.
still seein around 17.5 MPG.

When do I start see the miles go up.....or is that gonna happen

 

is that the lie-o-meter telling you that or are you hand calculating your mileage?

also i am at around 11-12 mpgs in the city so if those are your real figures i would be perfectly happy where your at right now

 

Nope.

Using the ol calculator.....
75% of my driving is pretty much hiway.
I even started to keep it around 1800 rpm .....really did not see an improvement.
Just thinkin she should get more MPG as the motor wears....

 

Your engine doesn't have a break in period. Considering you're driving a 6500lbs truck, I'd say 17.5 is pretty damn good ! What are you expecting to see ?

 

I thought us 2wd where geetin in upwards of 19 or so.....
I was gettin 21 or so with the ol 99 PSD....but it did have 210k on it....

 

with 13K on it you may see it go up a little more but that is it. I started out at 13mpg off the lot. . .15-18K I finaly topped out at 16mpg in stock form. TST gave me a little more mileage.

 

Doin 15.5-16 round town on the lie-o-meter, gonna hand calc when I fill this next tank, i kept forgetin to reset the trip meter when i'd fill up [:@]also gonna and calc my trip in a week halfway cross the country and back...should be interestin.....

06 q/c 4x4 15.7k

 

want better mileage??? check out my mpg thread in my signature. In the middle of testing different things and so far have gone from a consistant high 16's/low 17's (old commute) to low 18's (longer commute, 2500' elevation climb/drop... 85 mi 1 way).

IMO, your mileage is pretty good considering the amount of miles on the clock and it's a mega cab.

One thing to add... having put 65k miles in less than 2 years on my truck, I've seen it's performance improve/change at the 50~60k mile mark. no explanation for it, performance goodies have remained the same in that time period. motor just seems alot looser than it did in the previous 40k miles (bought it with 13k on it).

 

Don't forget you need to load it down with some weight to break it in, I got mine used and it was getting 13 and 14 MPG with 25000 on it, till the next week when I started pulling a 16 enclosed trailer with about 5000 pounds in it and the next thing I knew I was getting 14 pulling the trailer and it jumped to 17 around town with mixed highway and town and 19 on the road.

Mine is slipping a little need to get a load it soon, I was hoping to pull a few trailers full of gators, but missed one load when I was out of town, maybe I can hook to his 6.0no and tow him back to town, when his turbo goes all the way out LOL.

 

lol Herb you and your gators man....gets me every time....

I was gonna go grab a load of steal in mobile (bout 2 hours away) and run it down here for a construction job, I was wantin to do it to get a good load on it I've heard the same about the cummins gettin happier after ya put er ta work...Turned out the load will be ready for pick-up the day before my 19 hour trip for xmas though so I decided to let my bud make the cash...can't win um all...

Can't wait till summer comes around again though ppl down here pay to get their huge 60ft. yatchs pulled from place to place cause its cheaper than fuel to "drive" them from here to say panama city or pennsicola, and their rich so they have other ppl do their dirty work...