I have 10 years with K&N FIPK on this truck and go back another dozen or so years with other vehicles both diesel and gas. Guess what? NO PROBLEMOS! This is backed by excellant Oil Analysis results!
As said, K&N is not being sued for damages, they sell thousands upon thousands of filters for our style of vehicle and IF maintained properly, caused NO ISSUES!!
We all have opinions, some are even based on personal experience, but read all the threads carefully

and you will warm up to something that is great for your purposes!
Best of luck and NEVER start a K&N thread again!