Years ago, Amsoil had the same foam type air filters, called the '2 stage' ,,,
DID YOU NOTICE IN THE VID HOW THEY FAIL TO MENTION HOW TO SERVICE THE FILTER?????
If they are like Amsoil, they use a special 'tack' oil to 'attract/catch/hold' the dirt.
Thick, sticky, and NASTY!!!!!!!
Had one (Amsoil) in my old silvy,,,Nasty out of the wrapper, nasty to clean and by far the nastiest filter to re-oil on the planet!
After you soak that turd to 'loosen' the dirt, you really have to work it over to clean it...
BUT WAIT!!! THERE'S MORE!!!!
You then have to dribble the special tack oil on it and 'squeeze/press' the thing to distibute the oil / get the excess out.
What a fuggin mess!!!!!
Still not convinced???????????
Don't worry, no matter how hard you try to get the excess out/off, it will still puke/drip tack oil in the bottom of your airbox,,,
IMHO, avoid this thing like the plague!
(No wonder Amsoil doesn't sell 'em anymore!)