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High end oil filters examined

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Old 01-11-2015, 11:08 PM   #1
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Default High end oil filters examined

I’ve decided to do a “high end” oil filter comparison for automotive type filters. High end meaning filters with a synthetic filter media. The contenders are:
-Fleetguard with Stratapore media;
-Amsoil Ea;
-Royal Purple;
-Wix XP;
-Fram Ultra.

I’ve also included two “standard, off the shelf” filters:
-Mobil1 Extended;
-Fram Xtra Guard.




Starting with the standard filters, the Mobil1 is a high quality filter using metal end caps and nice looking pleats. The media joint is glued together, a minus in oil filters. It has a can thickness of .0230 inch.

The Fram Xtra Guard has cardboard end caps. For this one reason alone is why most Fram filters should be avoided. The pleats are few and not evenly spaced. It does have a steel crimp to join the media ends. The can thickness is .0170 inch.

Standard filters were included to show what’s out there in the “normal” auto parts store. The Mobil1 Extended is similar to a K&N, WIX (non-XP), Hastings, Bosch, etc, or most of the higher priced filters. Many of these will do you just fine. The Fram is the bottom of the barrel, similar to store brands, STP, Penzoil, no name brands and some ACDelco filters. Many of these filters have a plastic center tube. It’s best to steer away from any of these filters.

Moving onto the high end filters:




Amsoil: It has two layers of filter media, the inner one is a thinner but tough sheet. The outer is a fluffy material. Under it all is metal screening. The media ends are glued together. The can thickness is .0250 inch. Stamped steel bypass spring.




Fram Ultra: A single layer of filter media with a reinforcing screen is used here. Steel crimped media ends. The can thickness is .0180 inch. Stamped steel bypass spring.




Royal Purple: It has two layers of filter media, the inner is a thinner sheet. The outer is a fluffy material. Underneath is metal screening. Glued media ends. Can thickness is .0210 inch. Stamped steel bypass spring.




Wix XP: Two layers of filter media, they're both pretty tough but the same. Metal screening backs it up. .0140 inch can thickness. Coil spring bypass spring.




Fleetguard: It has two layers of filter media, the inner one is a thinner but tough sheet. The outer is a fluffy material. Under it all is metal screening. Steel crimped media ends. The can thickness is .0360 inch. Coil spring bypass spring.




Conclusion: Any of these high end synthetic media filters are plenty better than a regular filter. All will serve you well, even the Fram. Out of the bunch, I rate the Fleetguard King of the Hill-it has the best features throughout: Top shelf media, crimped media ends, the thickest can. It’s hard to find and not all applications are available with the Stratapore media. I’d rate the WIX XP next and the Royal Purple third with the Amsoil & Fram behind. But it’s a tight race, all are very good. The WIX XP is very close to the Amsoil (with the exception of the bypass spring) and identical to the NAPA Platinum-WIX makes all three filters.

Buyer beware! There are counterfeits out there, usually found online. The Fram Ultra is stocked at Walmart. The lesser non-Stratapore Fleetguard filters can be pretty poor, some built like the cardboard Fram filters.

Last edited by Paul Bell; 07-17-2017 at 09:20 PM.
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Old 01-12-2015, 01:13 AM   #2
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Good write up!

Would love to see a WIX Racing filter not just the XP
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Old 01-12-2015, 01:22 AM   #3
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I'll see if I can get one but it's not for the street. Like most racing filters, it has a pretty high micron rating and allows higher flow-along with more dirt to pass through.
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Old 01-12-2015, 07:26 AM   #4
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Interesting info...
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Old 01-12-2015, 09:33 AM   #5
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I used to run a regular WIX myself. I might have to check and see if this "XP" is available.

Paul I'd like to see the regular WIX (like a 51522). Currently running a K&N simply because it's easy to install and remove.
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Old 01-12-2015, 09:50 AM   #6
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On the list sir.
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Old 01-12-2015, 10:03 AM   #7
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Thanks Paul. The Wix filter can be had off the shelf too at places like Advanced Auto and O'Reily's. I opted for the longer Wix filter when I did my last oil change.
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Old 01-12-2015, 11:21 AM   #8
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Paul or anyone using the Wix 51522. Does the double thick filter media cause an oil pressure drop? For example: pressure is 60 psi @ idle using "X" brand filter & drops to 50 psi @ idle using the Wix 51522.
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Old 01-12-2015, 12:12 PM   #9
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Very informative thanks. My yearly oil change is coming up in less than 2 months.
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Old 01-12-2015, 12:43 PM   #10
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How do all these compare in price?
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Old 01-12-2015, 01:25 PM   #11
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I buy the Wix in the MP (mechanics pack) for $60 per dozen. So that's $5 a filter shipped.
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Old 01-12-2015, 01:31 PM   #12
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As far a pressure, I run an Ea064, I am at 60+psi cold and 45ish at operating temp.
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Old 01-12-2015, 04:39 PM   #13
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Quote:
Originally Posted by Rise of the Phoenix View Post
Thanks Paul. The Wix filter can be had off the shelf too at places like Advanced Auto and O'Reily's.
We have Advance here in the NY area. I stopped in one. Sadly, the two rocket scientists who happened to be re-stocking oil filters in the filter isle never heard of WIX.
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Old 01-12-2015, 04:43 PM   #14
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Quote:
Originally Posted by Paul Bell View Post

We have Advance here in the NY area. I stopped in one. Sadly, the two rocket scientists who happened to be re-stocking oil filters in the filter isle never heard of WIX.
Yeah, most those guys who work in places like that are pretty damn smart.
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Old 01-12-2015, 04:45 PM   #15
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Quote:
Originally Posted by 01ssreda4 View Post
I buy the Wix in the MP (mechanics pack) for $60 per dozen. So that's $5 a filter shipped.
Is this for theXP filter? Got any links to purchase? I change my oil so often this would save a ton of money.
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Old 01-12-2015, 06:50 PM   #16
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Quote:
Originally Posted by Paul Bell View Post
We have Advance here in the NY area. I stopped in one. Sadly, the two rocket scientists who happened to be re-stocking oil filters in the filter isle never heard of WIX.

Wix is a NAPA sold product.
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Old 01-12-2015, 08:27 PM   #17
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Or o'Reillys
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Old 01-12-2015, 08:46 PM   #18
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Wix should be available in various places. Some NAPA filters are made by Wix.
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Old 01-12-2015, 11:26 PM   #19
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Good info thanks for the write up.
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Old 01-13-2015, 07:41 AM   #20
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Quote:
Originally Posted by Paul Bell View Post
We have Advance here in the NY area. I stopped in one. Sadly, the two rocket scientists who happened to be re-stocking oil filters in the filter isle never heard of WIX.
I used to work part-time, for Advance Auto Parts, as a delivery driver. I know for a fact, that Advance doesn't carry Wix filters, they have contracts with Purolator, AC Delco, Motorcraft, Mann, Mobil1, and K&N. Of course, I've also been in Autozone, and I don't recall seeing Wix there, either.

If I need a Wix filter, I have to go to the locally owned parts store, who is affiliated with the 'Parts Plus' buying group.


FWIW, based on the information I got from the 'bobistheoilguy.com' site, I've been using Baldwin oil filters for a number of years. Their filtering media isn't synthetic, but the filtering rates and flow rates seem to be a good balance. Unfortunately for me, they're not sold everywhere, and I either have to go 18 miles across town, or mail order from a Baldwin distributor.


Quote:
Originally Posted by Rise of the Phoenix View Post
Yeah, most those guys who work in places like that are pretty damn smart.

Was that really necessary?
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