Well, managed to put these figures together.
I ran 1710miles used 13gals of DEF=144miles/gal at a cost of $36.56. Diesel 210gals=8.14mpg at a cost of $715.64.
I do spend 4hours a day on city roads just to cover 150 miles in both am and pm rush hour traffic. Due to traffic delays, construction and delays in Atlanta loading times I seldom run the same route daily and the mileage and mix of interstate and city roads differs daily. In fact on these trips I spent less time on the Interstate than normal.
As Mark said no point doing a comparison and add in weather conditions and temperatures, what’s the point.
If you fuel up regularly and do your DEF in a pattern then any spike would come to light, just as Pats did.
Going back a few years I did do a cost analysis when DEF first came out on a 15l ISX, running it on a number of set routes to add the extra cost to the running costs.
I think I took the average figure and added 10%.
Mark, you are right about the domestic beer though, I can’t drink it. We can get Molson and LaBatts in bottles so a hangover is easy to achieve.
Paul