tvman44 wrote:
I have checked my mpg on my old diesel several times and Diesel Kleen boost my mpg 2 to 3 mpg everytime. Not enough to pay for itself but the biist in power is nice towing. :)
Keep using it and eventually you might hit 50MPG! JK. I used it in my 12 Valve when the ULSD fuel became prominent. I was using it for lubrication. I still only got 15 unloaded most of the time. I got 20 one time with that truck. Driving 55 on a two lane unloaded. Never did it again. Averaged 15-16 most of the time not towing. Towing my boat or camper I got 11-12, sometimes 10. New truck does some better, but not enough to make it's own payment. Won't use anything in it but diesel fuel.