The last three years of operating my 2010 Cummins ISX 550 HP with a competitor’s product, my average economy was 7.2. I was hoping to have some fuel increase from switching to the AirDog, but couldn’t imagine the actual gains I was going to receive. My fuel economy with the AirDog has jumped to 8.5-9.1, plus the filter monitor is a great addition to this product to now know exactly when to change my fuel filter and service the water separator. Way to go, AirDog!
Zeke B.
Aurora, CO
