[rwg200]

Hello,
Could anyone tell me what they get fuel mileage on average with the Cat C-15 625BHP 12 speed ZF.
i seem to be getting about 5MPG which seems a little harsh! averaging around 65mph.
Thanks
Rob

The previous owner of my coach purchased a 2007 with a Cat, he texted me today saying he only got 4.6 mpg from OK to AZ.

Thanks,
I guess it is about right then! at least i know there is nothing wrong, it runs great just thought it was thirsty, but i am going from a American Tradition with a 9 litre to the Newell with a 15 litre, 

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Searched a bunch of truckers forums. appears 6-6.5 for a semi is normal. Of course, you are a big barn door,
and not a aerodynamic tractor unit on a semi, and do not have 18 speeds, and the ability to pick the gear you want.
Throttle position at different speeds and load make a difference.
Good info on rv driving. http://www.rvtechlibrary.com/engine/Cat_...rmance.pdf

Thanks for the reply,
It looks like its probably about right then, its good to know there is nothing wrong!
Thanks
Rob