Bought air intake and air filter setup at around 100,000 miles and hadn't bothered to check it or change it as oil analysis reports didn't mention it. Today was a nice 60 degree day so I figured I would just replace it with one of the same instead of trying to clean it. It's the injen xx1010 / Donaldson dry flow filter. By accounts this filter had over 215,000 miles on it so I'm sure it's been on long enough. I have seen the AEM dry flows cleaned with mild detergent so I've got some scent free vegan HE soap so I'll just use it and see how it goes..might be a good idea to keep a backup JIC.