Details between Amsoil's EaO and Ea15K

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No, but I don't know the exact differences. It may be as simple as the individual applications with no actual changes in the filters.

The Amsoil website says the following:

"When used in conjunction with AMSOIL synthetic motor oils, AMSOIL Ea Oil Filters are guaranteed for extended service life:

• Ea Filters designated with product code Ea15K are recommended for 15,000 miles/one year, whichever comes first, in normal or severe service.

• Ea Filters designated with product code EaO are recommended for 25,000 miles/one year, whichever comes first, in normal service or 15,000 miles/one year, whichever comes first, in severe service."

Pablo is one of our resident Amsoil dealers. He may chime in here or you can find him somewhere on the forum and ask direct. Please share what you learn if you do it PM. I could speculate and have some ideas but all that might do is project the wrong info.
 
I don't know that there are physically any differences at all. It's just something I have not seen any evidence either way and certainly can't tell just by deconstruction of both types.

I know when Amsoil was having issues with the EaO's in only certain engines, Amsoil changed manufacturers on certain filters and rebadged them Ea15K. But please do not ask which ones, or from which manufacturer to what manufacturer. It's not something I kept track of, but I know some guys here do that sort of thing.
 
Thank you both.

I was thinking of going to once a year oil changes in the Astro. I use the longer (ACD PF-52/WIX 51036) as opposed to the shorter filter (ACD PF 47/WIX 51040) that the truck came with from the factory.

I have no problems using the shorter Ea15K as even that will be fine for my annual ~10,000 mile commuting in this vehicle. Searching BITOG and Amsoil, it appeared that the media was the same. I was seeking reinforcement on that thought.

I will have to assume that the longer EaO with it's extra media is what allows for the extended mileage recommendation.

In case I have anyone confused, Amsoil makes an EaO for the longer PF52/51036 but only an Ea15K for the shorter PF47/51040. These filters interchange on my vehicle. The prices between the two are almost identical.

If there is a chance there could be a problem using the taller EaO, I have no problems using the shorter Ea15k as even that is overkill if otherwise identical to the EaO.
 
I know Amsoil has been a bit gun shy since the Toyota plugging filter debacle. In vehicles where space is a problem and only small filters will fit, they may put a 15K limit on that application.
 
They had to decrease the filtering ability to increase fluid flow. Remember they used to filter at 15 microns now they filter at 20 microns. Might as well just use a Purolator which filters to 10 microns on the second pass at 30 percent the cost.
 
Originally Posted By: motor_oil_madman
They had to decrease the filtering ability to increase fluid flow.


You know this as truth, how?


Originally Posted By: motor_oil_madman
Remember they used to filter at 15 microns now they filter at 20 microns. Might as well just use a Purolator which filters to 10 microns......


This just doesn't make sense.
 
It's true that the older Amsoil filters... the Ea line, were 98.7% at 15 um ( I am looking at a printout from the website from some years back) and the new ones are advertised at 98.7 % @ 20 um with the EaO rated for a 25K FCI and the Ea15K rated at 15K FCI. The older materials also advertised a 25K FCI for the Ea with no qualifications. This is a fact. The exact reason for the change is known only to Amsoil. Likely for a good reason. Sometimes companies have a "Bridge Too Far" moment and have to step back a little.

Madman, ALL filters filter down to 10 microns... at some percentage. I am not aware of any Purolator engine oil filters that are rated as 10 microns at a high percentage (e.g. 98.7% as in the normal ISO4548-12 test).
 
Originally Posted By: Jim Allen

Madman, ALL filters filter down to 10 microns... at some percentage. I am not aware of any Purolator engine oil filters that are rated as 10 microns at a high percentage (e.g. 98.7% as in the normal ISO4548-12 test).


Jim, checkout this thread,
https://bobistheoilguy.com/forums/threads/pureone-beta-rates.113200/

Here's a summary I made of the suppose filtering performance of the PureOne per data given by Purolator in that thread.

µm -- Efficiency -- Beta Ratio
------------------------------
5 -- 51.3% -- 2.054
10 -- 92.8% -- 13.9
15 -- 99.20% -- 125
20 -- 99.9% -- 1000
25 -- 100% -- Infinity
30 -- 100% -- Infinity
40 -- 100% -- Infinity

B = Beta Ratio
(B-1)/B x 100 = Efficiency %
 
Yep that was an epic thread, both in terms of the topic and the technology discussed, but also in it's contentiousness. But I didn't see anything on the Amsoil Ea/EaO/Ea15K differences...

.... Unless you were talking about the Puro rating. In that case I was talking about Puro rating their filters at "98.7% @ 10 um." Though that filter will catch a sizable percentage at 10 um, 98.7% @ 20 um is their ISO 4549-12 rating.

Going back to that old thread, the disparate numbers from Purolator were never reconciled.
 
As I prepare for my winter oil change, I am interested filters that exhibit excellent cold flow characteristics with respectable filtration. I think the Amsoil filters are tops in that category.
 
Amsoil makes great filters (or I should say they have Donaldson make great filters for them ( : < ). The big question is are those filters demonstrably so much better than soe of the other similar filters on the market to warrant the extra cost? In terms of efficiency, definitely not. Not really in terms of construction of flow for the most part either. Essentially, you can get the same thing in a <$10 Fram Ultra, Puro Synthetic of Napa Platinum (among a couple of others). We can nitpick minot details but I'm not convinced those detail difference carry much weight or equate to enough to make the price differential justifiable.
 
Originally Posted By: Jim Allen
Yep that was an epic thread, both in terms of the topic and the technology discussed, but also in it's contentiousness. But I didn't see anything on the Amsoil Ea/EaO/Ea15K differences...

.... Unless you were talking about the Puro rating. In that case I was talking about Puro rating their filters at "98.7% @ 10 um." Though that filter will catch a sizable percentage at 10 um, 98.7% @ 20 um is their ISO 4549-12 rating.

Going back to that old thread, the disparate numbers from Purolator were never reconciled.


I posted that for you since you said:
" I am not aware of any Purolator engine oil filters that are rated as 10 microns at a high percentage (e.g. 98.7% as in the normal ISO4548-12 test)."

The summary I gave above was the data sent to the OP by Purolator in that epic thread. And according to the info there, the PureOne was 92.8% @ 10 microns.
 
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