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Message: [QUOTE="TyCorr, post: 859536, member: 1451"] I didnt mean to come off as a coct but everybody says the durqmax is a mileage queen and mine have all been dismal if that is the case. Ive never hit 15 EMPTY. LBZ, Lmm, or LML. All in the 10mpg range. I can see the mileage increasing with deletes but look at the six liter, deleted, still mediocre mileage. And they dont have near as much bs as any 08+ duramax, psd, or ctd. My cousin Todd has an efilive tuned 6.7 qclb 6spd with bunch of fuel and air mods and it dynoed 740 something on #2. He dailies it and told me its good for about 18mpg under 2k rpms and if he uses a small portion of the power it drops REAL FAST. Idk, ive been struggling with fuel mileage on all my trucks for a while now. My 7.3 isnt even.getting mileage anymore. Im not sure if my worn injectors and getting-bad-trans are to blame. Maybe I idle it too much? :shrug: I think its pretty telling that running the same truck for all these years and being able to.get decent mileage and like someone turned a switch mine has tanked and nver recovered. I think its our fuel. Summer, winter, no matter, its about the same. [/QUOTE]

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