mcmxi
Well-known member
Lifetime Member
Equipment
***Current*** M6060HDC, MX6000HSTC & GL7000 ***Sold*** MX6000HST & BX25DLB
Nice looking chart ... the colors at least. I only run Kubota parts on my three Kubota products so I'm not suggesting anyone do anything. I've already mentioned that I blow out the outer air filter regularly in the summer months when I'm working in dusty conditions but everyone if free to do as they wish.K&N "filters" are absolute junk, they have no place on any engine, especially a tractor.
View attachment 94549
So back to that chart. I'm not familiar with ISO 5011, I don't know anything about who did the testing, how many filters were tested, if the filters were new or used when tested (see @The Evil Twin comment above), or any other variable to confirm the validity of the testing. The other obvious thing is that the difference between best and worst is 3.13% which looks impressive on the chart, but there are other properties of an air filter other than efficiency. Regardless, I don't have any agenda when it comes to K&N, and like I said, maybe running one isn't the best thing.