If that was the case, then nobody should ever use a high efficiency bypass filter on their engine.
All about Carquest oil filters
- Thread starter Hatsuwr
- Start date
In this document titled:
You'll find this paragraph:
https://www.stle.org/images/pdf/STL...d by Filtration Systems_tlt article_Dec13.pdf
You'll find this paragraph:
https://www.stle.org/images/pdf/STL...d by Filtration Systems_tlt article_Dec13.pdf
The Service Pro Extended efficiency vs particle size curve looks to be about the same as the OG Ultra was in Ascent's ISO testing. And Motorking said that the OG Ultra was 80% @ 5u, which is close to this Service Pro Extended info.Looking up some of these different PGI brands is interesting. This one has some efficiency numbers at different particle sizes. I’ve been emailing PGI trying to get these with no luck.
To my old eyes it looks like 99.8@25 and 99.5@20. Which means the Carquest Premium and Microgard Select advertised efficiencies are both correct.
That paper, and the reference is over 11 years old. So have these types of additives changed over the years. If it was a big problem I'd think you'd be hearing about it from all the applications that use high efficiency bypass filtering setups. If you're worried about it, use a rock catcher oil filter, lol.
That's why I said historically, I don't know if it's a current issue.
Regardless, I'm not worried about it. I'm not looking for a filter that works that low. I'm merely pointing out that it could be an issue.
From page 30 of the PDF you linked in post 22. Sounds to me like there's nothing to worry about using any high efficiency full flow oil filter. Note the bold parts.
All three filter suppliers have seen no evidence that additives
are removed by filters. Filter supplier No. 1 was adamant
about this issue but noted that silicone defoamers may
be the only exception. This individual says, “The answer to
the question about additive removal by filters is a most emphatic
no! The reason is due to the size difference between
filter pores and additives. The primary removal mechanism
is pore blockage. The pores (even the finest ones) are typically
on the order of micron sized (10-6 meter), whereas the
dissolved additive molecules are typically on the order of
normal molecular size, hence nanometers (10-9 meter) and
are at least three orders of magnitude smaller than the smallest
pore.”
Filter supplier No. 1 continues, “The only exception
might be the silicone antifoamant because (1.) this additive
is dispersed in the form of fine droplets, hence not dissolved,
and (2.) the difference between surface energies of the glass
fiber (very high) and silicone (considerably lower, say around
half of glass fiber) makes the droplets accumulate on the fiber
surface and through this adsorptive effect, some of the
silicone antifoamant can indeed get removed. However, once
the glass fiber surface is saturated with accumulated droplets,
the rest of them go through unabated.”
Filter supplier No. 2 says, “Filter elements do not remove
fluid additives under normal operating conditions. The only
case where additives may be removed is due to contamination
of a lubricant system.”
Filter supplier No. 3 says, “After extensive oil analysis
testing over many years, our depth filter has never removed
additives or additive packages from any type of lubricating
oil. With our filter, there are no factors or sizing that effects
additive removal. In fact, if water and particulate contamination
is kept extremely low, testing shows that additive packages
can be extended beyond their normal operating life.”
Filter supplier No. 1 provides data from studies done
evaluating the following four lubricants:
1. Mineral oil-based products.
2. Mineral oil formulated with a poly methylmethacrylate
viscosity index (VI) improver.
3. PAO mixed with a polyol ester co-basestock.
4. Straight polyol ester-based fluid.
All four lubricants were filtered at least several hundred
times through two different sets of 5-micron filters, then two
10-micron filters and finally one 20-micron filter. The lubricants
were filtered at temperatures ranging from -10 C to 25 C.
Data generated from evaluating these lubricants is shown
in Tables 1 through 3.
So far so good. I have a ways out yet for my interval. I’ll probably change it out at 200 hours for a good check and run the oil another 150-200 hours. I’ll post it when I cut it. But it will be another couple months from the looks of things. The quality of them is great especially for the price!@advocate how did you like the Pro Series OE+ filter? Great option for our Canadian friends.
Did some searching based on recommendations here on a better filter for my truck. Was able to find these at Part Source for fairly cheap actually. I’m seeing what the hype is about. These are a super nice filter especially for the money. Really impressed with the quality and cost. I bought all 3 that the store had (these are really hard to get up here in Canada it seems unless you pay a fair bit for them and order online). I’ll be using these in my 2018 ford coyote 5.0 truck for full intervals as dictated by the oil life monitor.
...
So, with AAP closing, are these CarQuest filters going away?
They're only closing ~700 of ~4700 stores.
I think it's also noteowrthy that they sold off WorldPac.
I believe just certain AAP stores are closing. No closing sales in the North East but plenty of “We’re Hiring” signs.
We also have Carquest stores around here.
I’ll be traveling to VA and NC in a few weeks and will report what I see there.
Even if AAP closes, there are plenty of other chains & independents that will sell the PG XL filters-and most of them will sell them for less $!
Thanks, I'm in the Charlotte area and honestly, haven't looked.....
Highly unlikely. AAP purchased General Parts International (2013) which was the biggest operator of CQ stores. Even with the announced closing of 'some' AAP stores, they will still have the rights to CQ parts and name use. I wouldn't be concerned about CQ filters "going away".
Thanks for the detailed write up.
I find the discrepancies with efficiency ratings to be a bit perplexing.
For example:
- Premium Guard Extended identifies ISO-4548-12 = 99% @ 25 microns
- MicroGard Select states "99 percent efficiency (Laboratory Test Performance per ISO 4548-12 at 25 microns)."
- Carquest Premium states "99.5% efficiency at 20 microns" but does NOT seem to reference ISO 4548-12 that I can see.
Is the Carquest Premium information a misprint or is Premium Guard producing a proprietary blend filter media that differs from the other private label brands? I doubt Premium Guard would provide detailed information on downline private label brands and thus there is probably no way for us consumers to really know for sure. And if/when we do know, vendors get changed on us and we're back to square one.
The current state of passenger car oil filters really has my head spinning and is for the most part, disappointing.
I find the discrepancies with efficiency ratings to be a bit perplexing.
For example:
- Premium Guard Extended identifies ISO-4548-12 = 99% @ 25 microns
- MicroGard Select states "99 percent efficiency (Laboratory Test Performance per ISO 4548-12 at 25 microns)."
- Carquest Premium states "99.5% efficiency at 20 microns" but does NOT seem to reference ISO 4548-12 that I can see.
Is the Carquest Premium information a misprint or is Premium Guard producing a proprietary blend filter media that differs from the other private label brands? I doubt Premium Guard would provide detailed information on downline private label brands and thus there is probably no way for us consumers to really know for sure. And if/when we do know, vendors get changed on us and we're back to square one.
The current state of passenger car oil filters really has my head spinning and is for the most part, disappointing.
They could be since AAP/Carquest is probably the one telling the supplier (Premium Guard) what the specs should be. Just like when Fram made the Titiaium for AAP, it was different because AAP probably wanted the things that were changed. Otherwise it would have been easier for AAP and Fram to just paint the can differently on a Fram Ultra for AAP.
Looking into it a little more, the Federated Extended Life series filters appears to check the right boxes. And I actually have a Federated parts house local to me. I'll be paying them a visit.
I find it humorous that I'd never thought in a million years I'd be using Valvoline Motor Oil and parts house brand oil filters. Wow how times have changed. LOL.
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
Cited: https://bobistheoilguy.com/forums/threads/whats-the-new-top-filter.382794/page-2#post-6889790
Happy New Year!!!
I find it humorous that I'd never thought in a million years I'd be using Valvoline Motor Oil and parts house brand oil filters. Wow how times have changed. LOL.
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
Cited: https://bobistheoilguy.com/forums/threads/whats-the-new-top-filter.382794/page-2#post-6889790
Happy New Year!!!
Looks good!
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