RX challenge:
You can do the same challenge, but bear in mind, the UPR is more effective than the JLT, so expect most to get pulled right past and still be ingested.
Anyone with any can that wants to do the test, you will never look at catchcans the same way again.
Up for testing the JLT with the RX behind it to show how much gets past it? Any can that allows the oil to pass right through may give you a "placebo" effect thinking you are addressing the issue, but until to personally test and see you won't believe how much is pulled right past 99% of the cans on the market no matter what the brand, or what the manufacturer claims.