Reviewed By kenneth c (GARLAND, TX) Reviewed for a 2011 Dodge Ram —10/30/2015 8:05 AM
just replaced one that had 60000 miles on it. you really can't tell how dirty they are because you can't see the inner filter. did seem heavier than the new replacement though. have never seen any improvement in gas mileage etc. as long as the PCM is adjusting things i don't see how you could. if anything the better fow is going to make it adjust for more gas!