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Wix VS Wix XP #4617138 12/28/17 09:26 PM
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Ian1982 Offline OP
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Have always used the regular Wix oil filters with good success. Is there much difference in filtering capabilities and the amount of dirt the XP will hold opposed to the regular filter. Also, any issues with the XP being restrictive in terms of good oil pressure? Thank You in advance.

Re: Wix VS Wix XP [Re: Ian1982] #4617156 12/28/17 09:39 PM
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newtoncd8 Offline
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Laboratory Test Performance per ISO 454812 18 grams dirt (WIX 51515), 99% efficient at 23 microns (Based on WIX 51515, WIX 51356, WIX 57060).

Oil Filter Laboratory Test Performance per ISO 454812 32 grams dirt (51515XP), 99% efficient at 35 microns (Based on 51515XP 51356XP, 57060XP)


12 Jeep GC, 04 Lexus RX330, 77 MG-B
Re: Wix VS Wix XP [Re: Ian1982] #4617164 12/28/17 09:44 PM
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slacktide_bitog Offline
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The XP is only worth the extra money if you go way beyond 10k in your OCI smile

Re: Wix VS Wix XP [Re: Ian1982] #4617169 12/28/17 09:51 PM
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i_hate_autofraud Offline
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I've used both, in real-world driving and eye-balling the dipstick, you can't tell the difference.

Re: Wix VS Wix XP [Re: slacktide_bitog] #4617190 12/28/17 10:06 PM
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bbhero Offline
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I agree slacktide. I bet the Wix XP could very easily go 20k miles plus.


Nissan Altima 3.5 Coupe
Cam2 Full synthetic 5w30 Carquest Blue 84356
"Treat your family like your friends and treat your friends like your family."
Re: Wix VS Wix XP [Re: Ian1982] #4617223 12/28/17 10:25 PM
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BrocLuno Offline
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This all depends on how "dirty" your engines is ... And, whether you are running additives to clean stuff up? If not, and your change oil at 6~8,000 miles, there is not much point.

OTOH, if you are running a by-pass filter and doing 30,000 mile oils changes I'd run an XP as the spin on laugh


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Wix VS Wix XP [Re: newtoncd8] #4617233 12/28/17 10:36 PM
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ZeeOSix Offline
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Originally Posted By: newtoncd8
Laboratory Test Performance per ISO 454812 18 grams dirt (WIX 51515), 99% efficient at 23 microns (Based on WIX 51515, WIX 51356, WIX 57060).

Oil Filter Laboratory Test Performance per ISO 454812 32 grams dirt (51515XP), 99% efficient at 35 microns (Based on 51515XP 51356XP, 57060XP)


Enough difference in efficiency for me not to use an XP.

Re: Wix VS Wix XP [Re: newtoncd8] #4617346 12/29/17 01:03 AM
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MetalSlug Offline
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Originally Posted By: newtoncd8
Laboratory Test Performance per ISO 454812 18 grams dirt (WIX 51515), 99% efficient at 23 microns (Based on WIX 51515, WIX 51356, WIX 57060).

Oil Filter Laboratory Test Performance per ISO 454812 32 grams dirt (51515XP), 99% efficient at 35 microns (Based on 51515XP 51356XP, 57060XP)


really regular wix ( napa gold ) is more efficient then xp , what the point of coming out xp ?

Re: Wix VS Wix XP [Re: MetalSlug] #4617357 12/29/17 01:32 AM
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ZeeOSix Offline
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Originally Posted By: MetalSlug
Originally Posted By: newtoncd8
Laboratory Test Performance per ISO 454812 18 grams dirt (WIX 51515), 99% efficient at 23 microns (Based on WIX 51515, WIX 51356, WIX 57060).

Oil Filter Laboratory Test Performance per ISO 454812 32 grams dirt (51515XP), 99% efficient at 35 microns (Based on 51515XP 51356XP, 57060XP)


really regular wix ( napa gold ) is more efficient then xp , what the point of coming out xp ?


WIX touts the XP for much longer OCIs than the regular WIX filter.

Re: Wix VS Wix XP [Re: ZeeOSix] #4617385 12/29/17 03:50 AM
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Tony10s Offline
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Originally Posted By: ZeeOSix
Originally Posted By: newtoncd8
Laboratory Test Performance per ISO 454812 18 grams dirt (WIX 51515), 99% efficient at 23 microns (Based on WIX 51515, WIX 51356, WIX 57060).

Oil Filter Laboratory Test Performance per ISO 454812 32 grams dirt (51515XP), 99% efficient at 35 microns (Based on 51515XP 51356XP, 57060XP)

Enough difference in efficiency for me not to use an XP.

Same here, ZeeOSix.

Re: Wix VS Wix XP [Re: Ian1982] #4617397 12/29/17 05:52 AM
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dlundblad Offline
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Many people, myself included, religiously use Toyota filters with their 50% filtering efficiency. Nothing to worry about IMO.

My biggest issue is the normal price compared to say a TG or an Ultra. People buy an Ultra and run it for less than 10k too though.


03 Jeep WJ 4.0 208k
02 Volvo S60 2.4T 199k
97 Chevy Blazer 4.3 175k
04 Audi A4 3.0 210k

Re: Wix VS Wix XP [Re: ZeeOSix] #4617431 12/29/17 07:49 AM
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Triple_Se7en Offline
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Originally Posted By: ZeeOSix
Originally Posted By: newtoncd8
Laboratory Test Performance per ISO 454812 18 grams dirt (WIX 51515), 99% efficient at 23 microns (Based on WIX 51515, WIX 51356, WIX 57060).

Oil Filter Laboratory Test Performance per ISO 454812 32 grams dirt (51515XP), 99% efficient at 35 microns (Based on 51515XP 51356XP, 57060XP)


Enough difference in efficiency for me not to use an XP.


I run good filters for two 6K OCIs. So could everyone with similar lengths.


Keep Your Pistons, Valves & Injectors Clean

19 Hyundai Santa Fe 2.4 GDI
20 Kia Soul XLine 2.0 MPI - both Pennzoil Ultra Plat. 5W30 / AC Delco PF1127 Ecores
04 Chev Colorado Napa Syn 0w20 & K&N



Re: Wix VS Wix XP [Re: dlundblad] #4617501 12/29/17 09:24 AM
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goodtimes Offline
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Originally Posted By: dlundblad
Many people, myself included, religiously use Toyota filters with their 50% filtering efficiency. Nothing to worry about IMO.

My biggest issue is the normal price compared to say a TG or an Ultra. People buy an Ultra and run it for less than 10k too though.


There isn't any proof Toyota filters are 51% efficient @ 20 microns in the multi pass, (too fast), test. Someone said it was so over six years ago, and drew a picture. There is documented proof from an independent party on their letterhead a Toyota copy filter was superior in particle filtration to a Fram Ultra. In a real world test, on a car that puts particles into the oil. People believe the no proof Toyota claim and it becomes a rumor, then becomes a reference.
My unpopular theory is cellulose, wood cells, filters finer over time than any all synthetic full flow filter. Filters combining wood cells and synthetic fibers is the best combo, in my unpopular opinion. fence smile

Re: Wix VS Wix XP [Re: BrocLuno] #4617506 12/29/17 09:33 AM
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4WD Offline
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Originally Posted By: BrocLuno
This all depends on how "dirty" your engines is ... And, whether you are running additives to clean stuff up? If not, and your change oil at 6~8,000 miles, there is not much point.

OTOH, if you are running a by-pass filter and doing 30,000 mile oils changes I'd run an XP as the spin on laugh


And to add to this logic we recently concluded it was 99/35+50/20
As a primary FU user I find the XP construction to look superior bypass and all
(cut open all filters posting here or not)

Re: Wix VS Wix XP [Re: Ian1982] #4617507 12/29/17 09:34 AM
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goodtimes Offline
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Originally Posted By: Ian1982
Have always used the regular Wix oil filters with good success. Is there much difference in filtering capabilities and the amount of dirt the XP will hold opposed to the regular filter. Also, any issues with the XP being restrictive in terms of good oil pressure? Thank You in advance.


Good success shouldn't be messed with in my opinion. The oil pressure should be the same. If you know your filters are fully choked at your fixed interval, then an XP would be better. Or you have a race car with an enormous oil pump.

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