We already know a lot of this already, but it was interesting.

http://people.msoe.edu/~yoderw/oilfilterstudy/oilfilterstudy.html

We've posted that one before. Very similar conclusions to BobIsTheOilGuy.com.

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93 SSEi, 95 SLE (supercharged) 97 Buick LeSabre Limited
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Maybe it's a Canadian thing, but the Quaker State filters I use are still made by Purolator and have not been switched over to Fram.

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Jerry /// Past: 95 SSEi (June 2010 COTM) -- 04 GXP (July 2011 COTM)
91 Honda Civic Wagon DX 2WD (fuelly) -- 208,000km -- 92hp -- Autocross Warrior
09 Lexus LS460 AWD -- 94,000km -- Daily Driver
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I personally use K&N, Mobil 1, Wix, or occasionally Purolator. No Frams. I like Wix the best, as they have a steel coil spring in the can, whereas K&N and M1 have sheetmetal leaf springs that can lose their spring, and cause problems.

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RIP sandrock

Wow, I just use whatever non-Fram filter I can. Right now it's a Purolator-made filter I got for $0.95 at Advance.

My reasoning is that since there are very few makers of filters, any given filter will do fine over the 7.5-10k oil change intervals I do. Also, many OEM's recommend 7500 mile change intervals without special filters. If it's good enough for the OEM's, it's good enough for my car.

Now if you're doing 1-year/25,000 mile oil changes, then by all means get the Amsoil EaO or another synthetic-media oil filter that can withstand those conditions.

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2012 Chevrolet Cruze Eco - Current car

1999 Buick LeSabre Custom - Former car

Learn from the mistakes of others, that way when you mess up you can do so in new and interesting ways.

I must be out of touch with oil and oil filter change since I've always changed oil on every car I've owned at 3000 miles. Last car I had had over 300k on it and was still going strong. I've done maybe 500 oil changes in my lifetime but keep in mind I've had more then one car and I include my wifes car also.

Back when I was born in the mid-80's oil was lightyears behind what it is today, so longer intervals made no sense. Today's synthetics are capable of going 7500 miles in many cars that have seen regular oil changes and do not have a history of sludging the motor. That's with any filter, too.

If you want a crazy oil change story, my fiancee's 2009 Honda with the latest gee-whiz oil life monitor let hers go 10k miles on regular Pennzoil 5w-20. And a Purolator filter. The engine is running just fine at 13k miles...

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2012 Chevrolet Cruze Eco - Current car

1999 Buick LeSabre Custom - Former car

Learn from the mistakes of others, that way when you mess up you can do so in new and interesting ways.