MPG issue?

[fatdrew]

I have an '03 6.0 F250 with 4" turbo back and SCT on performance. My truck is currently getting an average of 12.5 or so.. does this sound right to anyone? i figured i should be getting better than what im getting...

Thanks

[WarChild]

Is it hand.calculated or.the lie o meter? I have noticed I have been getting a little more mpg in my last few tanks. Could be crap.diesel. It makes a big difference. Also, how big.is your foot? Do you pedals adjust?

[Qholic]

I would suggest getting a custom performance tune. It makes a huge difference. I have a 350 dually and I get just south of 16 mpg. Prior to retuning I was getting an average 13.4

[psd_va]

I'm having the same problem and I have sounds my turbo is going out and also need a icp sensor. Not sure if you have the same problem but would be a good idea to get a scanner on it and check everything out. Also how are your filters? I cleaned my air filter and gained about 3.5 mpg but still isn't as good as I think it should be.

[drussell]

No lie my bone stock 2004 6.0 ps gets 17.6 mpg (hand calculated) i use diesel Kleen in every tank it seems to help considerably.

David

[neffco]

I stopped using diesel kleen and my truck stopped stumbling. I get 13 to 18 11000gvw depending on wind calculated with sg2.

[fatdrew]

I really try and keep my foot out of it
... its hard. Ill check all my filters and recalculate next fill up. Guess it wouldn't hurt to try diesel kleen either. And I need to stud my motor before I custom tune I think....

[WarChild]

Look into ether 2% bio or XPD. Diesel Kleen is good but they are better.

[lubbock guy]

"what does a turbo sound like when it is going out "?

Originally Posted by psd_va

I'm having the same problem and I have sounds my turbo is going out and also need a icp sensor. Not sure if you have the same problem but would be a good idea to get a scanner on it and check everything out. Also how are your filters? I cleaned my air filter and gained about 3.5 mpg but still isn't as good as I think it should be.

[WarChild]

It could have no different sound at all or it could sound like it chewing up the inside of your motor. If you suspect your bearings are going out then you can take off the intake tubes going to your air filter and try and move the blades of the turbo in and out. Don't get nervous if it moves slightly side to side that is normal but it shouldn't move in or out at all.