It was being worked on in a shop. Wasn't running on the road.
List of oil filters with 99% efficiency at 20 microns.
- Thread starter Bill7
- Start date
It was being worked on in a shop. Wasn't running on the road.
From the RoyalPurple website:
www.royalpurple.com
Premium Extended Life Oil Filters | Royal Purple
Royal Purple Synthetic Oil | The Performance Oil That Outperforms
www.royalpurple.com
- ß25 = 100 (at 25 or greater micron, media is 99% efficient.)
- ß20 = 75 (at 20 or greater micron, media is 98.7% efficient. Also considered absolute rating.)
- ß10 = 5 (at 10 micron or greater, media is 80% efficient.)
And Neons, and K-cars, and the 4-cyl Dusters… and probably others as well.
At least they kept mosquitoes in check during summer…
So you’re agreeing that RP filters are not 99%@20u, correct?From the RoyalPurple website:
Premium Extended Life Oil Filters | Royal Purple
Royal Purple Synthetic Oil | The Performance Oil That Outperforms
- ß25 = 100 (at 25 or greater micron, media is 99% efficient.)
- ß20 = 75 (at 20 or greater micron, media is 98.7% efficient. Also considered absolute rating.)
- ß10 = 5 (at 10 micron or greater, media is 80% efficient.)
I round up and agree that 98.7 rounds up to 99%. The repeatability of marketing tests are vague enough and filter PN specific.
If they were identical, Royal Purple would say they were. So would the ASTM test. 0.3% difference is 3000ppm…. Not insignificant.
I agree picking “ringer” PNs is bunk.
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You guys are worried about 99, or wait 97.3556%. I've been working on engines and cars trucks etc,since high school auto mechanics.Not once have I had an oil related failure worrying about such ridiculous miniscule difference between oil filters is a waste of time 😂
So you’re good with a manufacturer lying to you about its products specs, or with how it honestly compares to the competition?
If it’s ok for oil filters to cheat & cut corners, where does it end?
Nope ... Royal Purple says 99% @ 25u.
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If you can sleep better at night then by all means, research with all your hearts desire.
Has nothing to do with research. I’m not even arguing for a specific filter. If specs are meaningless in the long run, why have them?
Never saw any of those burning oil. But burning oil IS an instant fail on the required emissions testing in this area.
Its definitely insignificant for the average owner and only for the useless arguments in forum threads.
If anyone cared about filtration, they'd use a bypass filter or an ancient Frantz with a some toilet paper.
Without gram holding capacity, the OP's list compilation is a meaningless list. And, one would need the soot loading amount coming from the engine manufacturer. Some of us know already what engines Amsoil filters don't like.
If anyone cared about filtration, they'd use a bypass filter or an ancient Frantz with a some toilet paper.
Without gram holding capacity, the OP's list compilation is a meaningless list. And, one would need the soot loading amount coming from the engine manufacturer. Some of us know already what engines Amsoil filters don't like.
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There representative specs to compare one brand to the other - as published by marketing. I can guarantee you the media changes slightly from batch to batch for every manufacture, so it could be 99.3% this week and 98.7 next week anyway. Also the ratings are for some specific filter size or format, not necessarily the one your buying.
So yes, 99% at 20um is different than 99% at 30um for sure.
99% vs 97% for the same particle size is a meaningless difference both statistically and practically in my opinion.
Depends on the total amount of debris in that micron range, and the amount of time that liquid is circulated thru said media.
I agree in short time cycles (admittedly, “short” is a nebulous guess), let’s say 5 minutes, 99% and 97% may be statistically similar. Over a 20k mile, hundreds of hours OCI, we’d have to run at least 30 samples from each filter to be able to accurately say there’s no difference.
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Great mosquito repellent distribution method.
It's nice how we go from "efficient filters" to "20 yr-old Chryslers burning oil".
You forgot to mention Denso oil filters.
I call B.S. 99 percent at 20u will have better efficiency at 5u compared to 95 at 20u. Most wear comes from the finer particles.
