Fuel economy on Thor Super C

IndianaBoy wrote:
Wow, I didn't realize how small the DEF consumption was, I guess I always assumed it was more. Does this DEF volume only apply to the Ford 6.7L that Thor is using on their 2 New F-550 Super C Motorhomes or just in general for a modern diesel of similar displacement?

Is DEF consumption directly related to diesel fuel used, or are there any other variables to change DEF usage?

Thanks in Advance.

DEF usage is proportional to power output. Go heavier with the right foot, and it can drink it quickly, especially in the mountains. It controls NOx, which is goes up as combustion temps climb. On the contrary an empty pickup putzing around town may not use hardly any at all. But even then the cost/per mile is pretty negligible. Just don't run out or you won't be able to drive faster than a brisk walk (and If it goes into limp mode, and you shut it off, you won't be able to re-start until you add more). Some AAA contractors will do DEF delivery. Its not hard to find, except in the middle of the night in the middle of nowhere ;)