Shop Service Manager Was Quite Impressed

Now after I installed my AirDog on my Volvo VED12, my last 800 mile fill, I got 7.4 mpg. Current fuel mileage is up .4 mpg and shifting much less now with the AirDog installed. When the truck was in a Volvo shop, the shop service manager commented about how smooth the engine sounded. He was quite impressed.

Lonnie B.
Bartlett, IL