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A comparison of Mobil 1 and Amsoil EaO oil Filters #1250177
10/04/08 06:52 PM
10/04/08 06:52 PM
Joined: Apr 2004
Posts: 763
Herndon, VA
btanchors Offline OP
btanchors  Offline OP
Joined: Apr 2004
Posts: 763
Herndon, VA
Hello everyone,

I've been performing an experiment for the past 15 months with my 2006 Toyota Tundra Limited Double Cab 4WD. I have performed 5 UOAs, all with particle counts. For the first two UOAs, a Mobil 1 M1-209 filter was utilized. For the third and fourth UOA, an Amsoil EaO-34 filter was utilized. Finally, for the fifth and most recent UOA, I went back to using a Mobil 1 M1-209 filter. The reason for the back and forth is to determine if the results were skewed by some other trend in the wear patterns of the engine. In all cases, the oil used was Mobil 1 EP 5W-30, purchased from the same source (Wal-Mart). The Mobil 1 filters were also purchased from Wal-Mart, and the Amsoil filters came via mail order from the Amsoil warehouse in Richmond, VA.

For the duration of this test, all 15 months of it, I tried to keep as many variables as I could constant, keeping in mind this truck is in service - i.e., these results were not done in a lab! Here is a list of items I tried to hold constant:

1) The brand and grade of gas used was the same, almost always purchased from the same gas station (Shell 89 Octane). There were a couple of tankfulls here and there that were other brands or were purchased from other sources, due to out of town travel. No additives were used, either in the fuel or engine oil.

2) The driver was the same, and for the most part, driven in the same routine service throughout the test.

3) No other engine work of any kind was performed for the duration of this test - No air filter changes - In fact, other than refilling the windshield washer fluid, and changing the oil/filter (after the sample was taken), I did not even inspect anything that required any reservoir to be opened.

4) All samples were taken the same way, with the vehicle parked in the same spot. This was via a plastic tube inserted down the dipstick, to the length of the dipstick itself. This insured I was "breaking the level" of the fluid in the sump, but also, not extracting oil from the bottom of the sump either.

5) Each UOA interval was as close to the same number of miles as I could possibly manage.

Of course, weather varied, but I can't control the weather!

Here is the image of the test results. In the second box below, I tried to create columns to line up with the UOA results from Blackstone, so you can get a complete picture:



As you can see, it appears clearly that the Mobil 1 filter performed significantly better than the Amsoil filter. Currently, I have installed a Mobil 1 M1-209 filter on the vehicle...If people are skeptical of my test results, I may be willing to try another Amsoil EaO-34....Comments?

Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: btanchors] #1250179
10/04/08 07:02 PM
10/04/08 07:02 PM
Joined: Dec 2006
Posts: 351
Louisiana
Bebop367 Offline
Bebop367  Offline
Joined: Dec 2006
Posts: 351
Louisiana
Very interesting. I wish I understood particle counts.

Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: btanchors] #1250180
10/04/08 07:03 PM
10/04/08 07:03 PM
Joined: Jun 2005
Posts: 4,941
Billings, MT
chevrofreak Offline
chevrofreak  Offline
Joined: Jun 2005
Posts: 4,941
Billings, MT
I've got to say, after all the talk about the Amsoil Ea being the best filter you can buy, those particle counts disappoint me.


I <3 Red Line oil
Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: chevrofreak] #1250184
10/04/08 07:14 PM
10/04/08 07:14 PM
Joined: Jan 2008
Posts: 2,512
America's Dairyland
Saturn_Fan Offline
Saturn_Fan  Offline
Joined: Jan 2008
Posts: 2,512
America's Dairyland
Glad I stocked up on a dozen Mobil 1 filters at 3.99 a piece at Farm Fleet a week ago! I am real disappointed on the particle count on the EA, at least in this analysis.

In another thread a poster indicated that there is a chink in the armor of the EA air filters as well. For the money Amsoil is charging for these products, they need to get it right or they'll lose out on these.

Last edited by Saturn_Fan; 10/04/08 07:16 PM.

08 Toyota Corolla CE, 20K miles, 1ZZ-FE 1.8L, Castrol Edge 5w-30 & M1 EP filter
00 Saturn SL, 108K miles, 1.9L, Pennz Plat 5w-30 & M1 EP filter
Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: btanchors] #1250185
10/04/08 07:15 PM
10/04/08 07:15 PM
Joined: Oct 2002
Posts: 47,287
Duvall WA - Pacific NW USA
Pablo Offline
Pablo  Offline
Joined: Oct 2002
Posts: 47,287
Duvall WA - Pacific NW USA
The largest question is why the latest so very low?

I'm still not certain what to make of it. Interesting that the wear numbers are so even.


DIRECT JOBBER - PABLO - for all your Amsoil needs
http://oilslubesandfilters.shopamsoil.com/


Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: Pablo] #1250187
10/04/08 07:16 PM
10/04/08 07:16 PM
Joined: Nov 2002
Posts: 30,927
NJ
buster Offline
buster  Offline
Joined: Nov 2002
Posts: 30,927
NJ
Interesting.

Someone else also found the M1 filters to outperform the Eao filters as well.

Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: buster] #1250188
10/04/08 07:19 PM
10/04/08 07:19 PM
Joined: Jun 2005
Posts: 4,941
Billings, MT
chevrofreak Offline
chevrofreak  Offline
Joined: Jun 2005
Posts: 4,941
Billings, MT
Any chance you'll run a Bosch or PureOne on the next OCI? :P


I <3 Red Line oil
Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: chevrofreak] #1250194
10/04/08 07:27 PM
10/04/08 07:27 PM
Joined: Apr 2004
Posts: 763
Herndon, VA
btanchors Offline OP
btanchors  Offline OP
Joined: Apr 2004
Posts: 763
Herndon, VA
chevrofreak,

I thought I might get a question like this, asking to try other filters! But based on Pablo's response, he still may not be convinced the Mobil 1 filters are performing better, so it sounds like I need to try the Amsoil filter again to be sure. Buster - Can you point me to the post or other info where the person found the Mobil 1 filter performed better?

Although I am convinced my results are valid, I am certainly looking for ideas as to how I can make the test results as realistic as possible, short of sealing the truck in a vacuum bottle!

Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: buster] #1250200
10/04/08 07:35 PM
10/04/08 07:35 PM
Joined: Aug 2003
Posts: 740
md
qship1996 Offline
qship1996  Offline
Joined: Aug 2003
Posts: 740
md
So much for "absolute efficiency"...your results certainly dont live up to the claims Amsoil makes regarding the superior performance {and extreme high price} of these filters. Where is all the promised performance of the special synteq full synthetic media?????? For the price they charge for these filters,I cant see the benefits????

Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: qship1996] #1250205
10/04/08 07:48 PM
10/04/08 07:48 PM
Joined: Jan 2003
Posts: 18,449
East of IGO
Steve S Offline
Steve S  Offline
Joined: Jan 2003
Posts: 18,449
East of IGO
Again,,, the Amsoil filter is made to filter very good but as well it is a long life filter made to last through extended mile oil changes. So changing them out at 5,000 mile intervals is exactly like using syn in an engine that doesn't require syn oil and changing the oil at 5,000 miles. It is the wrong application and intended use of the filter and the oil. You will not see any advantage using longlife filters and oil in short interval use that is not what they are made for. you are just throwing good money away for no reason. What are blackstones lab tolerances?

Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: Steve S] #1250214
10/04/08 08:02 PM
10/04/08 08:02 PM
Joined: Aug 2003
Posts: 740
md
qship1996 Offline
qship1996  Offline
Joined: Aug 2003
Posts: 740
md
Mobil 1 filters are also long life filters.....but proved to filter much better than the Amsoil EA at these short intervals,I dont see the point you are trying to make. The Amsoil EA was marketed as a superior one of a kind product that combined extra fine filteration qualities together with long life....it failed at superfine filtering ability

Last edited by qship1996; 10/04/08 08:02 PM.
Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: Steve S] #1250215
10/04/08 08:02 PM
10/04/08 08:02 PM
Joined: Jan 2008
Posts: 2,512
America's Dairyland
Saturn_Fan Offline
Saturn_Fan  Offline
Joined: Jan 2008
Posts: 2,512
America's Dairyland
The problem with the EA filters is that they NEVER go down in price, only up. There are no sales, promotions on them, etc. Whereas Mobil 1 filers one can find deep discounts on these several times a year. I bought 12 of them for under 50 bucks recently. 12 EA filters would have cost a ton more than that.

I'll keep buying Amsoil's oils (big fan of them), but their filters are another story.


08 Toyota Corolla CE, 20K miles, 1ZZ-FE 1.8L, Castrol Edge 5w-30 & M1 EP filter
00 Saturn SL, 108K miles, 1.9L, Pennz Plat 5w-30 & M1 EP filter
Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: Steve S] #1250217
10/04/08 08:03 PM
10/04/08 08:03 PM
Joined: Apr 2004
Posts: 763
Herndon, VA
btanchors Offline OP
btanchors  Offline OP
Joined: Apr 2004
Posts: 763
Herndon, VA
Steve S - I agree - but keep in mind the Mobil 1 EP filter is also intended to be a "long-life" filter as well, made for extended intervals. So it would seem reasonable to compare the two - They're both going after the extended drain market.

It would be interesting to compare the results over longer intervals, like 10 or 15K miles - but it would take several years to do this comparison, at least with the rate I put miles on our truck!

Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: btanchors] #1250222
10/04/08 08:15 PM
10/04/08 08:15 PM
Joined: Sep 2006
Posts: 2,279
Up here in the NorthWest
LargeCarManX2 Offline
LargeCarManX2  Offline
Joined: Sep 2006
Posts: 2,279
Up here in the NorthWest
As indicated by a few triboligists in the past....there findings are indicating that the longer you run the Eao the better the filter gets.

Your findings and the time and dollars you have spent are greatly appreciated although. I would like to see the Fram extended guard and the Mobil tests at 7.5K

I am now closing in on my 4th 5K oil change using the cheap 99cent group 3 oils keeping the Eao in each change after this 5 K run I am going to cut open the Eao and see how it held up.


"Success is the ability to go from one failure to another with no loss of enthusiasm."
Sir Winston Churchill
Re: A comparison of Mobil 1 and Amsoil EaO oil Filters [Re: LargeCarManX2] #1250225
10/04/08 08:18 PM
10/04/08 08:18 PM
Joined: Apr 2004
Posts: 763
Herndon, VA
btanchors Offline OP
btanchors  Offline OP
Joined: Apr 2004
Posts: 763
Herndon, VA
I would tend to think that the longer you run any filter, the better it gets...

Also - another consideration is how many contaminants each filter can hold before it goes into bypass...I don't know of a practical way I can test that, though!

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