Darrel Mendoza
“I was a skeptic about fuel additives. My 2006 6.0 L started to act like it was cutting out under load. I changed all the filters, and it was better but still not right. Started using Diesel Kleen. OMG what a difference! No more cut outs, MPG went from 17.1 to 21.2. Cold starts were always an issue. Not anymore. Starts like it was already warmed up! Starting using it in my 1999 7.3. I just did not know how much power I was missing. Even the wife noticed it! This is now mandatory at every fill up! Had the guy behind the counter at the parts store ask me about it when I bought the big bottle. Told him my story, and said he was going to use it in his 1996 diesel truck. I know he will be a believer!”