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660 vs lonestar on fuel efficiency

Looking at a couple trucks and trying to figure out which has better fuel economy a t660 or a lonestar?

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Did you mean Prostar? I would say between a T660 and Lonestar I would have to say a T660

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Lonestar and Prostar are the same truck with a different hood. I personally dont have either one but I do have many friends that own either Prostars or T660s. As a general rule the T660 with the Cummins engine have proved to be way better on economy in the real world. One of my friends is running a 2011 T660 with a 500hp Cummins and the Eaton automatic. He pulls hopper trailers and is at 80000 lbs 95% of the time. He is averaging 7.7mpg. My best friend drives a ProStar with the Navistar engine and an automatic. He is pulling vans and usually around 60000 lbs. He averages around 7.2 mpg. BUT the company has already replaced 2 turbos, 2 EGR coolers, 1 ECM and a complete set of injectors. The truck is 10 months old. International is having a hard time keep their dealers in stock for parts. Especially engine components and AC components. I used to swear by International, I had a 9900i that I will swear to this day was the best truck I ever drove. Lately though I would run as fast as I can away from anything coming from Navistar!

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Chris will be eternally grateful.
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