Most helpful critical review
2 of 4 people found the following review helpful
Store bought stuff great, stuff from Amazon not so much yet
on December 17, 2012
This is a tough one. The guy I bought my 7.3l excursion from, also owned a trucking company and swore by this product. In fact he gave me what he had left over. Using it I got 15mpg combined town/freeway. Not bad for a beast.When I didn't use it, i would drop to 13 or so combined. I also experienced improvements in my gas vehicles. Once I ran out of his stuff, I bought some on Amazon because the product worked great. Most everyone online supported it as well.
However, the gallon I'm currently using appears to be having zero effect on my vehicles. All three vehicles are at mpg levels of when I wasn't using it. I don't know if I got shipped some snake oil or got a bad batch but i'm very disappointed with my purchase thus far. I'll update once I get into the second gallon.