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Originally Posted By: sayjac To elaborate on why I don't care for the for the nitrile 'combo valve' design. First, the main reason for the combo valve design is to save on manufacturing costs. This is why you will not see a combo valve used on Wix branded filters or Napa Gold line, which are the...

Good find, David1. Wonder if it's a new products or an old one rebadged. either way... nice to know. If you live in an area where they have Menards stores, they may carry this as they have a wide selection of Sopus/Shell products.

Only by cutting open filters do we find these things and we have seen enough to know that it happens to all brands, all price levels. They stamp oil filters out by the millions. Most failures probably go unnoticed because it doesn't cause any long term problems. For all you know, you ran 5000...

I'm impressed that BMW has a PS filter!

If there is any power gain by installing that filter, and I've played around on dynos enough to make en educated guess there isn't, the gains are eaten up by the hot air and a simple shield isn't likely to help that. If you could find some way to fully enclose it and duct it to outside air...

You guys are looking for "one-size-fits-all" answers where they don't exist. High efficiency filters are better in every sense, however the benefits in wear reduction are not readily apparent or particularly cost effective below the "normal" threshold of common OEM and aftermarket filtration...

I have carried a couple of filters with minor defects (can dents) up to the counter at the local WalMart. They act all appreciative but in the the cases where I rechecked, they ended up back out on the shelves.

Some Questions: -Were the filters cut immediately or did they sit for a while? -How much do the filters get jostled before and during the cutting? -Were the filters drained before cutting and, if so, how was that accomplished? -If the filters weren't drained, did they contain approximately...

Originally Posted By: TrevorS I can get that into Excel, no problem. On a related topic, are you familiar with Forscan? If you have an OBD adapter, it let's you analyze / log virtually anything that is in Fords various modules. PM will be sent. Not that particular one. Looks like I need an...

Good answers for you stchman. Go for the Duramax or High capacity filter... lotta people do.

Originally Posted By: TrevorS Thanks for this Jim. Great stuff. Is there anyway you could post the raw data? I would love to create some graphs with it. Would make the interpretation even easier. And since I have higher ambient starting temps and use 5w oil, I am no longer worried about using...

Originally Posted By: Clevy So Jim. Are any of these tests going to address the loading of the filter media and how long an oil filter really can be used before requiring a new one. No, these will be short intervals just to test the DP of the filters in my particular setup. The loading...

Clevy- No need for any contributions, but thanks for the offer. Overkill: This has been in the offing for a long, long time. I have long been curious about DP and most of that curiosity is based on the bypass and finding the means to prevent bypassing as much as possible. Secondarily, I wanted...

Originally Posted By: Shannow Thanks Jim, that's a lot of work to go to for us. I'm particularly impressed that the engine didn't grenade the second it went into filter bypass, given the common knowledge of how rare and devastating such an event it. ..." he said, tongue firmly in cheek...

Hopefully nobody got too blue in the face waiting for this. A lot of data to go through, a busy schedule and other priorities... what can I say? Background: I installed a differential pressure test setup on my F150HD (5.4L 3V Modular V8). Mine is a two gauge setup with senders on either side...

That's a seriously nice t-stat. Too bad they don't make one that accepts hard lines. Looks like a good company. I like the packaging for their trans overhaul kits but they still have an alacarte list as well. They even sell Magnefines! Not doing many transmissitons these days, but if I do...!

Zee said it right!

K&N is a great company overall. Glad they came thru for you.

Thanks. I have an older box that I swear says 99%. I'll check on that next time I'm up at the shop... if I remember.

Originally Posted By: TrevorS Well I'm interested because the .9% above 99% is significant in absolute terms. Your right in that statement but the qualifier is... AT WHAT MICRON SIZE. A filter that is 99.9% @ 25 um is catches roughly the same number of 20 um particles of a filter that is...