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#2502876 - 01/23/12 01:17 AM Re: Royal Purple Oil Filters? [Re: ZeeOSix]
ltslimjim Offline


Registered: 08/06/10
Posts: 5143
Loc: PL&F
Originally Posted By: ZeeOSix
Originally Posted By: jmsjags


I must be missing something ... I see no mention of what micron rating that 99.9% efficiency is at. frown


Yeah, the link only says 99.9% efficiency, no stated micron size in relation to that.

Royal Purple states 99 at 25 microns. Probably still >97% at 20 micron. FWIW, I like the M1 EP and Amsoil EaO filters a lot as well.
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1992 Civic VX 275k+
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#2503509 - 01/23/12 05:32 PM Re: Royal Purple Oil Filters? [Re: ltslimjim]
Ben99GT Offline


Registered: 02/25/05
Posts: 4299
Loc: MS
Originally Posted By: ltslimjim
Royal Purple states 99 at 25 microns. Probably still >97% at 20 micron.


RP states results for 25, 20 and 10 microns:

@ 25 microns - 99%
@ 20 microns - 98.7%
@ 10 microns - 80%

I'd like to see more filter results @ 10 and 15 microns.
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2001 F150 Supercrew
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#2503621 - 01/23/12 06:55 PM Re: Royal Purple Oil Filters? [Re: Ben99GT]
NHHEMI Offline


Registered: 07/06/07
Posts: 5123
Loc: NH
Originally Posted By: Ben99GT


What propaganda did you run into?


I would like to know what the OP is talking about as well? The RP filters are one of the best out there and their performance backs up any claims made about them. Not sure what propoganda is being referred to?
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#2503739 - 01/23/12 08:45 PM Re: Royal Purple Oil Filters? [Re: turbobink]
artificialist Offline


Registered: 09/23/07
Posts: 6714
Loc: Florida
I have been using them because I wanted a filter with fully synthetic media, and RP filters were the easiest for me to find.
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