Originally Posted by BYprodriver (Post 291500)

Most vehicle manufacturers strive to "idiot proof" their vehicles, thus the use of lower filtration oil filters & bypass valves for owners that often extend oil & filter change intervals.

Originally Posted by Ghostrider 310 (Post 291488)

Answer from Mahle corporate


thanks for the link. This Original Equipment design with the fleece endplates is made for and approved by Porsche, and it has to go through rigorous testing inside MAHLE and at the Porsche test facilities in different climatic regions and dust environments, before it is released for production. One example is the pulsation test. Here the filter is pulsed 500 000 times to see if it still holds its shape and performance. The endplates are actually made of flexible fleece (polymeric) temperature resistant material that will assure a tight seal to the tube that the filters is being pushed onto all the way to the next oil filter change. The material is superior to a plastic and even an elastomer (rubber) seal, due to the fact that it can compensate the thermal expansion and contraction of the filter module components during different operating phases such as cold start, warm-up, cool down etc.....

As far as the filtration efficiency, I can assure you that anybody who only claims a percentage and maybe a particle size that is being filtered out is ignoring a whole lot of detail filter media knowledge that is necessary to select the correct filter media for a high performance engine like the Porsche. What about the dirt holding capacity over the oil change interval, meaning can it hold all the dirt and filter all the particles out after a few thousand miles or does it get plugged up and the oil bypasses the filtered without any filtration? What about the structural integrity of the filter over the lifetime? Does the paper stay connected to the endplates, does it disintegrate due to pulsation, temperature fluctuation, oil containing detergents and condensation? There are many more questions that need to be answered before making statements like about the performance filter you had mentioned. MAHLE has a selection of different filter media, (cellulose resin impregnated, plymerfic fleece, different proe sizes, different dust hoilding etc. etc....) with different performance criteria, that are specifically tailored towards to the automotive manufacturers requirements, and we use exactly the same filter media in our Aftermarket filters, not a generic lower grade filter media for all oil filters.

Originally Posted by JFP in PA (Post 291502)

I prefer to think of them as trying to make cars “idiot resistant”, as for some reason, God seems to like to side with the idiots and makes it impossible to make things “idiot proof” as He (or She) always comes up with a bigger idiot………

Originally Posted by Ghostrider 310 (Post 291514)

Again, I suspected you would be a baby and you didn't disappoint! Hey did you see the end caps are not paper or did you not even read their response? Special polymer designed to seal and outperform normal plastic, see what you can learn when your mind isn't closed? But hay you run with NAPA know how, they know German! AND Mustang connecting rod specs, helofa basketball they printed too.

Originally Posted by Perfectlap (Post 291542)

I am absolutely STUNNED that a manufacturer would send an email response, and a lengthy, well-written one at that.

I called the idiots at Amex not less than 10 times to repeat the same problem. And the kicker, the guy on the phone at Verizon tried arguing with me that it wasn't their fault that they sent one defective after another for 10 months. Virtually every other big company I deal with have either folks answering the phone who can barely speak the language of the customer or have absolutely no interest in fixing a damn thing.

Good job MAHLE.

Originally Posted by JFP in PA (Post 291545)

Probably a canned response from the marketing department because of the number of inquiries’ they have gotten on the subject……………

Originally Posted by Perfectlap (Post 291564)

but what do you have to say about this argument?

"The material is superior to a plastic and even an elastomer (rubber) seal, due to the fact that it can compensate the thermal expansion and contraction of the filter module components during different operating phases such as cold start, warm-up, cool down.."

Originally Posted by Eric G (Post 291566)

Somehow this thread took a turn for the river awhile back

Originally Posted by 2003S (Post 291584)

I'm not much of a wrencher, but I do want to do the oil changes myself for a while, just to be more aware of what's going on in my car...

Originally Posted by Eric G (Post 291587)

When I got into Porsche's a good friend who has been a Porsche collector since the early 70's and whose collection is worth damn near a two + million dollars sitting in his garage told me, the German while not getting everything right did understand their cars and what they take to work. His advise has been, if you are going to enjoy the car and not try to abuse it you can go OEM and enjoy them for many years. If it has worked for him all these years I will trust his judgement.

Originally Posted by JFP in PA (Post 291567)

If it is so damned good, why does it tear around the center opening? I have never seen a Wix do that. And it does not address the glue line delamination failures where the media is bonded to the end cap, which is an even more common failure point.

Originally Posted by Perfectlap (Post 291659)

not sure if this is possible for you, but do you think you could ballpark the % of filters you've removed vs the number that had these issues?