A lady at out barn has an 03 HO with the 305/555 engine in it. Automatic, 4x4 crew cab, longbed, every option included. She tows a 3 horse gooseneck with I think 20' of living quarters in it (+/-5'). Empty she gets 16 to the gallon and towing an empty trailer she gets 8-9. The truck has maybe 10K miles on it. She recently had the dealer install some injectors. Said it would give her more mileage. Well, $1700 later, it didn't help at all (didn't hurt though). I don't know what rear end gear she has (I'm gonna assume a 3.73 since it's an auto). You think she just needs to let the truck break in more or is there something wrong? Thanks for the help yall.

 

I have 22K on my 03 HO. Off the lot and up to about 10K miles I was avg.15-16mpg on paper. I was worried. At 10K miles did a 3K mile trip with 8100# 5ver. After that trip solo MPG went up to 18-19 mpg. With 22K miles on it now I avg. 21mpg on paper (solo) even reached 24mpg at 62 MPH on week (to conserve fuel $$$$). Towing avgs are 13-14 mpg. Seems to have topped out at this point. So i would say give the engine more work and miles hopefully will improve.

 

I know some women who wouldn't be able to achieve 11 mpg in a Volkswagon TDI with the way they drive.

And she let some dealer talk her into the high mileage "economy" injectors for the low low price of $1700? Probably a nice lady with more $$$ than sense. Probably has lotsa lead in the right foot too.

You never know, maybe 16 ain't bad.

 

i took mine from 16.1 empty to 18.5 empty just by puttin a K&N cone filter in place of the stock air box.

cut some holes in front of stock air box and put it back on, back down to 16.1

only ~6k miles, with one tow.
guess that justifies a CAI / FIPK of some sort.

 

I am at 8950 right now 1 small tow at 6K and cannot get above 15.6 on the computer, light foot, go like heck, or let the wife drive. I sure hope it gets better.

 

My results seem similar to GotCummins? (above).

My truck has 12,000KM (7,500 miles) on it. I get 16mpg in the city and 26mpg on the highway (empty) at 110km/h (65mph). Our gallon is 20% larger, so the converted numbers are 13mpg/21mpg (city/hwy) for US the gallon. One thing I noticed (on the highway, pulling empty) is the effect changing the speed from 110km/h to 120 km/h has on fuel mileage. I dropped from 26 mpg to 21 mpg (21 to 16.8 US Gal). If your friend is in a hurry, she's going to pay.

Towing a 2 horse aluminum bumper pull (trailer is 7'6" high) at 60MPH, I get 15mpg (CDN) = 12 mpg (US). I consider this pretty good.

I'm planning an 8 hour drive to Minneapolis next week to pick up a new 25.5' 2 horse gooseneck. I'll be interested to see what the fuel mileage is on he trip back with the new trailer.

So far I'm pretty happy with my purchase. I test drove a 2500 with a Hemi before I bought this truck. Highway towing an empty trailer showed about 5mpg at 60 mph. Yes ... That's 6 vs 21 (for the Cummins). Even though the Hemi wasn't broken in, I knew right then I wanted a Cummins.

 

Well, I have no idea how she drives or if she goes by the computer (guess I should ask huh ). Yes bulabula, they did talk her into those special injectors. I'm gonna try and talk to her some more and see what I can get out of her. Thanks for the help yall.

 

Hey BB, depending on what you can get out of her, see if she'll pick me up some new injectors. Some EDM's might be nice.

 

I was gonna ask her for an all billet DTT tranny for me first. I'll be sure to ask her for ya.

 

Special fuel economy injectors? Yeah right. Talk about taking a stab at it.

 

[QUOTE]Originally posted by bulabula
[B]I know some women who wouldn't be able to achieve 11 mpg in a Volkswagon TDI with the way they drive.

And she let some dealer talk her into the high mileage "economy" injectors for the low low price of $1700? Probably a nice lady with more $$$ than sense. Probably has lotsa lead in the right foot too.


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Chris, your my kinda guy!!!!!