Any T680 Owners? Would love some feedback.

Well, top to top, 200 mile/gal on bad terrain, and up to 400mpg on flat terrain. Will tell you more precise a bit later.

Hope this helps.

 

Well, looking at my statistics, its from low 145mpg to high 520mpg. Average I see there is ~200mpg.

 

Although its not recommended by engine manufacturer I do use Friction Modifier on my truck.

http://xado.us/revitalizants/3d-generation/maximum/amc-maximum-diesel-truck-diesel-engine

 

Wow. I have not realized such a differences. I stopped to follow my DEF usage, since it was quite steady for me. Although my driving area and average load weights are very steady as well.

 

My McAfee security says, this is a dangerous website.... I do not trust the stuff either......

My last DEF MPG is 293.

 

Not sure about this stuff but other similar products in the past slick50,duralube and a few others had the government all over them due to the fact the product ATE the bearings on engines ... Hopefully this stuff is tested better then those were

 

German chemical industry is standing by this stuff. I use it in every engine in my possession.

 

Try Malwarebytes' Anti-Malware. You will be surprised how many stuff your so called McAfee skipped.

 

I know, sometimes I have to overdrive it. But mostly I stay on the safe side. My truck has to survive on the best fuel and oils what I can buy....

 

My second quarter IFTA mpg is 9.32.