I put my first fuel preporator on my 1997 E Model Cat. It worked great, increased fuel mileage and great power. I got a new AirDog 4G system for my 2003 Cat C16. Love all the new features. Can’t believe 30,000 miles on a filter and a C16 getting 6.5+ mpg. You gotta own an AirDog to experience it.

Lorenzo C.
Weldona, CO