Quote Originally Posted by feeshrman View Post
i drive a diesel truck every day and put 70,000 + miles a year on it. I have had a 7.3 liter ford, a 5.9 liter dodge and am currently in a 6.6 duramax. I have put 450,000-500,000 on each of these without any major engine problems and have never put anything but diesel fuel in them. why fix it if it aint broke?
Feesh. it added 2 miles to the gallon average, I'll take it. I'm on my 3rd 7.3 powerstroke and am the same way but this seems to help.