Non-Stop DEF Burn While Towing?

[Mongo]

Just finished a 900 mile round trip hauling the camper and I noticed my exhaust filter stayed at 0% during the haul. When through quite a bit of juice too, about a half tank of DEF fluid.
I averaged 12.1 mpg.

Now I’m home and back to routine driving, I’m still at 0% and waiting patiently to see the filter % increase.

 

[cookiemonster]

That all makes sense. What kind of camper?

 

[Mongo]

That all makes sense. What kind of camper?

Forest River No Boundaries 19.3

 

[mkbruce]

Just finished a 900 mile round trip hauling the camper and I noticed my exhaust filter stayed at 0% during the haul. When through quite a bit of juice too, about a half tank of DEF fluid.
I averaged 12.1 mpg.

Now I’m home and back to routine driving, I’m still at 0% and waiting patiently to see the filter % increase.

Under load the exhaust will be hot enough to keep the DPF from accumulating particulate, and thus the % won't change. DEF usage also increases with load, so this all makes sense.

 

[Mongo]

Under load the exhaust will be hot enough to keep the DPF from accumulating particulate, and thus the % won't change. DEF usage also increases with load, so this all makes sense.

Excellent thank you. Glad it’s not something I have to worry about.

 

[stufarmer]

My F450 loved the Def sauce. With it's 4.30 gears the 6.7 was always in it's sweet spot, but lordy it liked to drink ..