Here we go again... ... ... ... ... ... .
Hopefully not !!! :-laf
Best, welcome to TDR !!!
It would be useful if you edit your signature, using the user control panel under the "discussion forum" list at the top of each TDR web page, with the basic info about your truck, you know... year/model, other upgrades.
After that it would be wise to FIRST use the search function here on TDR, also under the discussion forum menu.
There is ALOT of info and opinions here on TDR, most all of which has already been expressed in extreme detail. While people usually have no problem answering your questions, it is REALLY easier to search first and ask questions later.
99% of the time you will find your question already answered in an existing thread. If, of course, you don't. go right ahead and start a new thread!!!
All that beign said, most people here on TDR, as well as Cummins Inc, and Dodge, will STRONGLY recommend to stay away from oiled air filters in general, including the K&N in particular. Only a handful of people have good things to say about them!! You will see this when you read the thread that JimW links to in his above post.