I have cleaned these the same way before, but only when the vehicle already had issues or a KN filter was used. What motor does your truck have, a 3.0?
Mine has about 125k miles and has been getting around 19 mpg. I run Motorcraft, Wix, or Purolator filters.
Off topic, but was the tach accurate when compared to the tablet?
Last edited by TXxlt; 11-25-2014 at 02:10 PM.