I had problems with my 6.7 and the emissions. I had a check engine light come on and took it to the shop and they said egr was plugged up. Well they couldn't get to it till the next day and I had to go to Odessa TX. So I pored two bottles of Diesel Clean with C eaten boost in and did it again next fill up. By the time I made it to Ablien the check engine light went off and The truck came alive! So now I use it every other fill up just to keep the old system cleaned out!

 

the stuff does work very well! we use it in the DMAX's at work. people reported very positive points wondering what we did the first time we added. Lol