As far as I can tell, the BR tests are the only “sophisticated “ attempts in independent bench filter tests performed to date on the Endurance and its “ clone” the Amsoil. In BOTH separate instances they performed at the TOP in comparing particle filtration in the 20-30 micron range against a host of leading brands. You can try and find faults in their testing, but I give them kudos for doing a reasonably good job where others “fear to tread”. There have been ZERO attempts by others to come even close to what they have done in terms of testing . You can cherry pick and criticize the results to your own liking….results are not perfect nor indisputable…..they’re not an ISO sanctioned lab… but unfortunately (or fortunately) it’s all we have. In this instance they have essentially tested this filter TWICE….given that Amsoil and Endurance been shown to be clones (Whip City Video).No.
I’m saying BR tests aren’t lining up with official ISO testing. All 99%@20 micron filters should have the same results and they don’t. I don’t know why, do you?
Known identical filters aren’t testing the same. I don’t know why, do you?
Common sense would say BR’s results aren’t accurate or something else is going on.
Both times they were at the top of the list in filtration. Take it for what you will….even with a grain of salt if that’s your take.
I remain impressed, imperfections notwithstanding.