It's a bit concerning when an oil filter design house can't give accurate and consistent efficiency information on the products they make. They must efficiency test their products, so they know what the efficiency is .... yet there's always some kind of conflicting information going on. The PG "Micron Rating" of 42-60 microns means something (I'd say it's the absolute efficiency), it's not just pulled out of the air.
What’s the new ‘top filter?’
- Thread starter BTLew81
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Efficiency figures are going to be all over the place depending who and where makes the media blends. In this case we know PGI is sourcing the media from different suppliers. That also could mean that they didn't formulate the media and going off a vendor supply as raw materials.
https://www.pgfilters.com/contact/
https://premiumguard.com/contact/
Probably give them a poke if you'd like. Chances are they'll be opaque about it.
https://www.pgfilters.com/contact/
https://premiumguard.com/contact/
Probably give them a poke if you'd like. Chances are they'll be opaque about it.
I still say these are the best buy out there for quality and price.
Sent an email ... will see what they say. Ask for clarification on their "Micron Rating" of 42-60 microns, and why there's a disconnect on their 99% and the statement "removal of particles as small as 25 microns".
I trust the Microgard Select specs as stated with the ISO. I guess the real question is whether the media is the same in the Carquest Premium?
I also asked PG if their rebranded filters like the MicroGard Select has the same efficiency as their Premium Guard EX filters.
It's marketed as a synthetic blend media with 99% efficiency at an unspecified micron rating. It's quite possible that it's the same media used in their regular filters.
I was looking around on the PG website and I found an article titled, “The truth about oil filter micron ratings.” One of the statements in the article is this:
“However, in order for a micron rating to be meaningful, two pieces of information must be present – the contaminant particle size (in microns) and the filter’s efficiency percentage.”
https://www.pgfilters.com/resources/articles/the-truth-about-oil-filter-micron-ratings/
Exactly, but they don't do that in some of their efficiency statements, even on their own website.
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I made this post in a previous thread regarding Carquest Filters:
Although the Carquest Premium, STP, Federated and Premium Guard all look to be the same filters (made by Premium Guard) they appear to all have different language and slightly different numbers in regard to the efficiency rating. I went ahead and posted all the references to efficiency from the brands that appear to be selling variations of filters produced by Premium Guard.
Carquest Premium:
Per official website PDF: "Efficiency at 30 microns* 99% *Testing of average filter efficiency of CARQUEST Premium filter 85515 under ISO 4548-12 for particles greater than 30 microns."
http://www.carquestprofessionals.com/filters/pdf/Premium-Oil-Filters-Shell-Sheet.PDF
Per Advance Auto website: "Synthetic blend media provides 99.5% efficiency at 20 microns and 2X capacity vs. Standard filters."
https://shop.advanceautoparts.com/p/carquest-premium-oil-filter
STP Extended Life: "Built with advanced synthetic fiber blend media with 99% Multi-Pass efficiency and removal of particles as small as 20 microns. *Micron rating 42"
https://www.autozone.com/filters-and-pcv/oil-filter/p/stp-extended-life-oil-filter
Federated Extended Life: "99% Multi-Pass Particle Removal Efficiency* *>20 microns per ISO 4548-12"
https://www.fisherautoparts.com/Extended-Life-Oil-Filters.aspx
https://www.fisherautoparts.com/images/Federated-Extended-Life-Filters.pdf
Premium Guard Extended Life: "99% Multi-Pass efficiency and removal of particles as small as 25 microns* *per ISO-4548-12" "Micron Rating 42~60"
https://www.pgfilters.com/products/filters/oil-filters/oil-filters/
https://www.pgfilters.com/product-catalog/product-page/PG2500EX/2025-Ford-Mustang/Oil-Filter/
ECOGARD Synthetic: "Synthetic blend media delivers 99% efficiency based on ISO 4548-12 at 25 microns"
https://www.ecogard.com/filter-look...500/2019-Chevrolet-Silverado+1500/Oil-Filter/
MicroGard Select Extended Life: "99 percent efficiency (Laboratory Test Performance per ISO 4548-12 at 25 microns)"
https://www.oreillyauto.com/detail/c/select/microgard-select-oil-filter/
Pentius UltraFLOW Extended Life: "99% filtration efficiency for 20 microns and above particles"
https://pentiusautoparts.com/ufxl-oil-filters/
Parts Plus Extended Life: No reference to efficiency, however the website says, "Parts Plus filters by Premium Guard."
https://myautoparts.partsplus.com/c...ufacturer=parts-plus-filters-by-premium-guard
Pronto Extended Life: The website does not list any efficiency information, however Pronto Auto and Parts Plus are part of the Pronto Network Cooperative, Inc. "Our members market under the brands; Pronto, Parts Plus, and Auto Pride." The Pronto Network is also partners with Federated Auto Parts. "Pronto Network Cooperative is a proud member of the Automotive Parts Services Group, The Group along with our partners at Federated Auto Parts; and Nexus Automotive International." It may be safe to say Premium Guard provides the oil filters for Parts Plus, Pronto and Federated.
https://theprontonetwork.com/home/about
Prime Guard Synthetic: "Filters out 99% of contaminants at 30 microns for longer engine life" No ISO reference. Prime Guard may also be manufactured by Premium Guard. Both filters look similar but not identical; red vs black gasket, though EcoGard filters also have a black gasket. "Prime Guard® is Highline Warren’s Fastest Growing Proprietary Brand."
https://www.shophighlinewarren.com/p/PRIMPOS2500?uom=EA&tracking=searchterm:2500
https://highlinewarren.com/prime-guard/
@Peted You need to add NAPA Gold to that list.
https://bobistheoilguy.com/forums/t...0-microguard-select-msl57060-cut-open.382820/
https://bobistheoilguy.com/forums/t...0-microguard-select-msl57060-cut-open.382820/
Fram Tough Guard______99% Eff. @20 micron - 15k life - $7.17 (spin on)
Fram Ultra Synthetic____99% Eff. @20 Micron - 20k life - $8.97 (spin on)
Fram Ultra Synthetic____99% Eff. @20 Micron - 20k life - $8.97 (spin on)
BrendanC
$100 site donor 2024
referencing when they had Champ build their filters, followed by M+H and now premium guard. on the filters ad’s they show 99.5% @20um
Holy carp-$5.97 to $9.99 in ~6 months! And they said inflation was dead...
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Not really inflation. More like “demand has gone way up for these, we can charge more now!”
