A search on "Amsoil air filters" or "Donaldson" brings up a lot of info on this.
I bought my EAa189 based on these threads. Of particular interest to me was a post that indicated that the Donaldson nano-media was developed for M-1 Abrams tanks running in the desert. I checked my filter @ 15k miles, no residue in tube at all. Performance is subjective but I do notice that my EGT cools down really fast after a good pull. I can only assume that the filter is more efficient all the time. I'm looking forward to trying the PSM cool air intake and cool blue hose. I did keep my OEM filter to drop in if I have to go to dealer. One never knows...
I bought my EAa189 based on these threads. Of particular interest to me was a post that indicated that the Donaldson nano-media was developed for M-1 Abrams tanks running in the desert. I checked my filter @ 15k miles, no residue in tube at all. Performance is subjective but I do notice that my EGT cools down really fast after a good pull. I can only assume that the filter is more efficient all the time. I'm looking forward to trying the PSM cool air intake and cool blue hose. I did keep my OEM filter to drop in if I have to go to dealer. One never knows...