I bought a 13 with the 370 hp 800ft Lb torqe. It has a fair amount of power. I have about 700 Miles on it towing the trailer my average is about 9.5 Driving it empty from the dealer to home and from home to the graphics shop 18.6 cruise set at 64. NOt sure what I think of it yet although half the urea is gone I thought that would last like a oil change period anyone have any thoughts on urea refill time?
How heavy towing and what percent of miles was towing? My understanding is the heavier the load or harder it works the more def it uses. I think for the def to last an oil change worth, it would be a solo driving. I could be wrong:shrugs but that's my understanding. 18.6 is not bad considering its not broken in yet and you have more hp/torque:thumbsup then my 07.5
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