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Re: Project 67 GMC custom 6.5 turbo diesel
I'm hoping on the low side 17mpg, but I'm not that experienced with diesels. My friend who is helping me with this thinks that 23mpg is not unreasonable, but to be honest my right foot is made of lead. I also don't know how some of the mods will affect mileage. But to be honest it has to be better than the 10 I was getting with the 350.
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