Dave,

I didn't get that out of Dennis' comments. As I understood it - the
problem arises when you use a high mileage oil with a filter designed
for low mileage - Mobil One 7000-7500 mile oil change vs a Mann/Mahle
3000 mile filter. If you run the oil  to the recommended mileage for the
oil change - you have far exceeded the capacity of the Mann/Mahle filter
which is maxed out at 3000 miles.

John Rodgers
Clayartist and Moldmaker
88'GL VW Bus Driver
Chelsea, AL
Http://www.moldhaus.com

Dave Mcneely wrote:
> So, Dennis -- are you saying that Fram filters do a better job than Mann
> or Mahle?  Many list members believe otherwise, and some have advised
> that Fram filters are not at all suitable for a waterboxer engine.  It
> is a lot easier to simply go down to a local auto supply and pick up a
> filter than it is to make sure to order up from an online vendor (for
> me, anyway).  I believe one complaint against Fram filters was that they
> will "blow out," or the media will collapse under pressure.  One list
> participant said that he found a Fram filter he removed had collapsed
> internally, and was simply not filtering.
>
> I'm certainly not an expert on filters.  Fram sells two different
> filters, one more expensive, and supposedly more effective, than the
> other.  Is that one ok, the cheaper one not?
>
> Thanks, David
>
>
> On Wed, Jan 13, 2010 at 6:56 PM, Dennis Haynes wrote:
>
>> As for quality, (consistency, good design, heavy duty construction)
>> both the
>> Mann and Mahle filters are quality products. I do not wish to put them
>> down.
>> Where those products fall short is their ability to maintain adequate
>> filtration for extended oil drain intervals. In a number of vehicles
>> including mine is results were wear metals and silica would reach
>> unacceptable levels in less than 7,500 mile intervals. I have also
>> done some
>> experiments changing just the filters to see if new filters would
>> clean
>> things up. Both the Mobil 1 brand and the Fram Tough Guard have shown
>> consistent ability to clean up an engines oil to acceptable levels. I
>> am
>> sure that both of these companies now offer premium products ( better
>> filter
>> media) but I have yet to see them available here. Maybe someone out
>> there
>> can get us the good stuff.
>>
>> Dennis
>>
>> -----Original Message-----
>> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On
>> Behalf Of
>> Alan Felder
>> Sent: Wednesday, January 13, 2010 12:20 PM
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: Re: Motor Oil (Synthetic)
>>
>> Dennis - I have an 82 Diesel and have purchased MANN oil filters for
>> my next
>> few changes.  I noticed you mentioned MANN and MAHLE filters twice,
>> inferring "do not use".  I have always thought of these as being
>> quality
>> filter manufacturers.  What are the reasons for not recommending them,
>> or am
>> I reading your statements incorrectly?
>>
>> On Tue, Jan 12, 2010 at 11:13 PM, Dennis Haynes
>> wrote:
>>
>>> some point we have a thermal run away. On the 2.1L engines the oil
>>> cooler
>>> was added to help this and dynamic oil pressure warning system
>>> detects
>> this.
>>> No a Mann or Mahle filter does not fix it.
>>
>>
>>
>>
>>> 50. My 1988 Fox can go as high as 14,000 miles with good filters,(not
>>> Mann
>>> or Mahle). The Vanagon oil tends to need replacing due to nitration,
>>> (high
>>> ring temps
>>>
>>> --
>>> Alan Felder
>>> Austin TX
>>> 82 Diesel Westy
>>>
>
>