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The OFFICIAL Oil Filter Testing and Results Thread (4G63T/4B11T)

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Old Nov 27, 2012, 05:55 PM
  #46  
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Smartypants eh! I knew I was over thinking it anyway its every 3,000 to 5,000 miles depending on duty. Or every 3 months if I dont drive her much.
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Old Nov 27, 2012, 06:14 PM
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Originally Posted by SleepySamurai13
Smartypants eh! I knew I was over thinking it anyway its every 3,000 to 5,000 miles depending on duty. Or every 3 months if I dont drive her much.
With such an aggressive OCI, you really don't need to run an extended life filter, but you probably have nothing to worry about by using a Royal Purple on your street car.



One other reason to consider synthetic motor oil is extended periods between oil changes. Petroleum-based oils generally require replacement every 3,500 to 7,500 miles, depending on service use. Synthetic oils can easily offer double the service life as their chemical composition does not break down over time. Several manufacturers have taken advantage of this and supply synthetic oil in their vehicles from the factory to extend oil-change intervals and extend engine longevity. Check your owner's manual or ask your service advisor if synthetic motor oil may be right for your vehicle or driving style.
http://autos.jdpower.com/content/con...motor-oils.htm
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Old Nov 28, 2012, 12:11 PM
  #48  
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Originally Posted by apagan01
You can use both the EA20 or the EA13
So, I downloaded the entire AMSOIL catalog and took a quick peek at the application guide. It looks like the Ea15k20 is what they recommend for both the 4G63T and 4B11T:

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Old Nov 28, 2012, 01:49 PM
  #49  
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Originally Posted by golgo13
So, I downloaded the entire AMSOIL catalog and took a quick peek at the application guide. It looks like the Ea15k20 is what they recommend for both the 4G63T and 4B11T:

In the beginning, the ea15k13 was what was recommended for evo, and that was the TINY oil filter that I first had - switched to the ea15k20 which was a more normal size comparable to the ea046
Last edited by golgo13; Nov 28, 2012 at 02:31 PM.
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Old Nov 28, 2012, 02:01 PM
  #50  
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Originally Posted by kyoo
In the beginning, the ea15k13 was what was recommended for evo, and that was the TINY oil filter that I first had - switched to the ea15k20 which was a more normal size comparable to the ea046
Huh. That's interesting.

It looks like the Ea15k13 is taller but thinner.

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Old Nov 28, 2012, 02:24 PM
  #51  
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Nice test. Thanks for the data. I guess I'll be using amsoil filters to match their oils I run.
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Old Nov 28, 2012, 08:48 PM
  #52  
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So EA15K20 is the only option for amsoil filter and its the best filter????
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Old Nov 28, 2012, 11:13 PM
  #53  
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Originally Posted by eclipsegsx012
So EA15K20 is the only option for amsoil filter and its the best filter????
Andy says that the 13 fits, but without knowing the surface area of both filters I cannot say which would be ideal. According to the latest application on their site, AMSOIL recommends the EA15K20.
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Old Nov 29, 2012, 11:40 AM
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Great information. I religiously change my oil at 3,000 miles or less, but I am really surprised at the results of the factory filter, not that it really affects me since my OCI is so short, but I will be switching to Purlator's since they are cheaper and easily available at my local Wal-Mart.
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Old Nov 29, 2012, 03:27 PM
  #55  
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Only about halfway through - but thank you very much!

I am pretty surprised about the Mitsu/Denso filters I was always told that OEM was the best by everyone I had talked to.... now if only I could have stocked up on Ea046 a couple of months ago!
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Old Nov 29, 2012, 03:34 PM
  #56  
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Originally Posted by fostytou
I am pretty surprised about the Mitsu/Denso filters I was always told that OEM was the best by everyone I had talked to....
Making an assumption (albeit a dark one), I think that auto manufacturers really only need to put a 'good enough' filter on the motor to ensure the car makes it through the warranty. After that... you're on your own.

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Old Nov 29, 2012, 03:45 PM
  #57  
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Originally Posted by golgo13
Andy says that the 13 fits, but without knowing the surface area of both filters I cannot say which would be ideal. According to the latest application on their site, AMSOIL recommends the EA15K20.
should have taken a picture - i've had both, it seemed like the 13 was much smaller - it was a little taller but much much narrower, so i was alarmed and was what led me to make that other thread in the first place - go with the 20 - but there is a definite difference from the 46 as well (just in terms of exterior look, dont know about size etc)
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Old Nov 29, 2012, 05:42 PM
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Originally Posted by golgo13
Making an assumption (albeit a dark one), I think that auto manufacturers really only need to put a 'good enough' filter on the motor to ensure the car makes it through the warranty. After that... you're on your own.

That, coupled with who ever the lowest bidder was.
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Old Dec 5, 2012, 12:11 PM
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Originally Posted by AWDTerror
Great information. I religiously change my oil at 3,000 miles or less, but I am really surprised at the results of the factory filter, not that it really affects me since my OCI is so short, but I will be switching to Purlator's since they are cheaper and easily available at my local Wal-Mart.
Make sure it's the Purolator PureOne filter you get as pictured, the cheaper Purolator (which is all my local Walmart carries) is not the same quality.

I used to run the PureOnes in my ex-wife's WRX and they were great filters. I am considering switching my Evo over to them. I've gotten them from Fleet Farm, Pepboys, and Amazon.
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Old Dec 6, 2012, 06:28 AM
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would have loved to have seen a Mann in the mix as they are OE to many European cars
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