Some think that because it’s published information. Can you link where you saw that it’s better than other M+H filters? What I’ve seen so far is dismal.
He can’t plain and simple. truth. I’ll take a Prime Guard any day
What...No I wasn't. How is that forgivable?
The data is limited, yes. However, according to this test, it filters significantly more from 20-30 mu than the Wix XP. Maybe that's not saying much due to the comparatively better performance of others, but it is a data point consistent with what I said: Boss has better performance.
Well, the fun part is there are really only like 2 passenger car filter manufacturers, despite the myriad labels on the can.
Right okay. When you compare those two, worse vs. worst.
I'd say there's about 3 majors anymore, Mann-Hummer, First Brands, and Premium Guard seems to be gaining a lot more ground these days.
I also tend to trust these independent tests more than I trust the Purolator data sheets. It's not just filtration efficiency that seems to be a lot different, but restriction as well. Those independent tests show 3-4 times more restriction than is shown on the data sheets for similarly sized BOSS filters at the same flow rate with similar oil viscosity.
Something isn't right with that Brand Ranks "efficiency test" when you look at where the Boss sits in the Ascent's test results. No way the Boss is more efficient than the Royal Purple.
My guess is whatever dirt they use isn't mixed well enough and is agglomerating and making for inconsistent results. In general any home lab setup is never going to accurately show anything and as much as people are always disheartened to hear, only tests done on calibrated lab equipment with very controlled procedures is ever going to yield any worthwhile results and all these home labs are just a waste of time.
Yes, the crazies are not on that side.
Do you have any data of another M+H performing better than a Boss? I have no dog in any fight, I genuinely just want to gather data.
That's a pretty broad question since M+H makes all kinds of oil filters. The regular PureONE has better efficiency than the Boss. Regardless of what you think from the Brand Ranks test, the Boss isn't as efficiency as a Royal Purple, Ultra or Endurance.
Can efficiency increase as a filter gets dirty? If so, maybe that can have a differential effect depending on test duration and gross particle load.
I don’t think anything, I just want to see data.
On oil filters the efficiency generally gets worse as it loads because the pressure against the remaining openings in the media increases forcing more particles through, air filters get more efficient but air filtration is a little different and I think the properties of a dust cake on air filters are entirely a different mechanism than a clogging oil filter. I think the reason we're seeing these results is that their dirt load was not mixed to were the individual particles were properly dispersed in the oil and the particles agglomerated the larger resulting particles are more easily filtered out.
