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Hi all- as we are cranking through our air filter reviews (we will publish them all this spring and summer), we have a few gaps in brands where we were able to find very little feedback from users. If you have used Motorcraft air filters, could you give us your feedback? In particular: - fit...

I really like your test - simple and effective. Just to be clear on all the parameters: - at the bottom of the box, on the other side of the oil rag, you had suction into a vacuum cleaner, is that correct? - when you say 4 minutes, do you mean that the suction was on for 4 minutes, or that it...

Originally Posted By: river_rat I put a little WD40 on the Toyota and retested it much cleaner. 8 grams dirt in all cases from the same batch of dirt. Toyota OEM, Fram TG, Fram regular (all dry and new out of the box.) Hi River_Rat- can you describe your test in more detail? I did not quite...

Originally Posted By: Drew99GT George, did you test a regular Pro 5R, not the Proguard 7? Hi Drew- we don't test them ourselves - it would be too expensive, and we are a small consumer site. But we collect test results, and we have accumulated a lot of them. Unfortunately, we have not been...

Originally Posted By: mitsuman47 How do the Amsoil EAA filters compare to the other filters mentioned here in regards to filtering efficiency. It was a disappointment. According to the tests, when clean, its filtration performance is roughly equal to the Airaid (in fact, a bit worse, but it is...

Originally Posted By: slickrocko1 for my Cummins.... [...] My paper filters are showing flow restriction at about 3000 miles and changed every 5000. Slick - you might want to consider leaving your filters quite a bit longer, unless you are really driving in a LOT of dust. Normally, an air...

Originally Posted By: ltslimjim Who would ever opt for the Dry S instead? Does not seem very rational, does it? Quite a few users do not want to deal with oiled filters, so I imagine AFE needs an offering in the segment. Many people don't quite realize how much a few % of filtration efficiency...

Originally Posted By: Drew99GT Just for clarification, the Proguard IS NOT the same filter as the Pro 5R. The Proguard is a 7 layer oiled filter with 5 layers of gauze and 2 layers of synthetic media. It's one of the best reusable filters made and is 99.7% efficient. Likely better than most...

Huge differences between the two. Pro 5 R = ProGuard. See upthread.

On the ISO5011 tests we reviewed, the AFE ProGuard scores significantly better than both the AFE Pro Dry S and the K&N in filtration ability. The ProGuard and the K&N are even in capacity, about 2x the capacity of the Pro Dry S. When the filters get washed 5 times, the Proguard loses some...

Originally Posted By: menezes do i go back to the old air filter or keep the k&n with gas prices now at $1.24/litre I want to sqeeze every ounce out of that little car that i can [...] what would you guys do IF IT WAS YOUR CAR? Menezes - if you read the link above, then you know that, whatever...

Originally Posted By: ltslimjim If I went away from the K&N drop-in filter for my car, should I go with AFE Pro Dry S or AEM drop-in for replacement? SlimJim- If you want to stay with a reusable filter, the AEM Dryflow does better than the AFE Pro Dry S in filtration tests. The Pro Dry does...

Well, as long as it works for you, that's what counts:-) Take care - George

Originally Posted By: Jim Allen The AEM media is very efficient as well. +1 We reviewed a lot of ISO 5011 tests recently, and the AEM scored highest of all reusable filters - even after being washed several times.

Originally Posted By: boxcartommie22 k&n air filters do not increase wear on your engine old wives tale. Hi Box Car Tommie - this ongoing series of articles discusses actual air filter data - not unsupported opinions. Over the next few weeks, it will cover multiple ISO 5011 tests, which all...

Originally Posted By: menezes have any of you noticed a decrease in fuel mileage by using a k&n air filter?? Drop-in air filters do not affect mileage: Air Filters and Mileage. Short of putting in a cold air intake, the impact of air filters on performance is negligible. The only effect of...

Integras drink oil above 100K. I don't think you will get the benefits of a synthetic oil if you have to add several quarts between oil changes. Before deciding what oil to change to, I would: (1) use the same oil that is being used today (2) measure oil consumption over the next 5K (3) do a UOA...

Sorry for pulling this thread back from the dead. I could not help noticing Ed Hackett's name too, like Jim... Ed - I have had this article in my notes probably for a good 10 years as well:-) I even looked you up once at RDI to ask for your comments on that test, but I never called... I had the...

It is not quite clear to me exactly what procedure they followed to calculate filtration performance. Can anyone enlighten me? Most of it is still available on archive.org, under www.oilfilterstudy.com.

Originally Posted By: Familyguy Last time I saw a comparison of a bunch of filters, it was an ACDelco paper filter that filtered the best. The various oiled re-usable filters let the most dirt through...enough that I'd never consider using one on any of my vehicles. You probably were looking...