I used K&N air filter . Ya just spray oil on it or something. One day my truck ran a bit funny. Then worse . Took it to my mechanic and the computer said Massive Airflow sensor was bad. He took it out and cleaned it. I asked does this happen to all the Duramax engines and he said , only thing he can tell is guys who use K&N filters cause of the oil in the filter. He didn't know I used K&N at one time . I changed it when it started running funny, hoping that would help . I figured he could very well be right about oil messing the sensor. Now I just use Napa. I also used an Amsoil air filter that you could clean out 4 times. never bothered more than once though.

Last edited by ihookem; 09/16/17.

But the fruits of the spirit is love, joy, peace, patience, kindness, goodness,faithfulness, Gentleness and self control. Against such things there is no law. Galations 5: 22&23