Date: Mon, 5 Nov 2007 21:21:30 -0800
Reply-To: David Kao <dtkao0205@YAHOO.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: David Kao <dtkao0205@YAHOO.COM>
Subject: Re: Oil Filter performance
In-Reply-To: <014d01c82031$51ca2df0$6501a8c0@TOSHIBALAP>
Content-Type: text/plain; charset=iso-8859-1
VW OEM oil filter for my 2001 Passat has the word 25 KM on the filter body.
everything else were German, a language I once learned but has forgotten
completely. The word 25 KM were fairly large relative to all other words.
I am sure it is saying something that has its reason to be said. I wonder if
it means change the filter every 25 KM (kilometers). I asked the dealer once.
They told me I should follow the owner's manual. OEM Passat oil filter is
more than $15 a piece. I changed it every two oil changes despite the owner's
manual says to change it at every oil change at 7500 miles. Opened a cylinder
head cover once and saw that everything was clean and shiny inside. I wonder
if the oil filter is indeed supposed to last up to 25 KM.
David
--- Scott Daniel - Shazam <scottdaniel@TURBOVANS.COM> wrote:
> There have been near endless testing and reports on oil filter performance.
> Google it, and there could even be some in the archives for this group.
> Lots has been done already. Like thousands of pages of reports and testing
> on oil filters.
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Michael Elliott
> Sent: Monday, November 05, 2007 8:47 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Oil Filter performance
>
> A worthy experiment!
> --
> Mike "Rocket J Squirrel" Elliott
> 71 Type 2: the Wonderbus
> 84 Westfalia: Mellow Yellow ("The Electrical Banana")
> 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
> KG6RCR
>
>
>
> On 11/5/2007 8:24 PM Dennis Haynes wrote:
>
> > While many folk speculate or are convinced that Mann or Mahle filters are
> > the only way to go, I have always had doubts that any filter is all that
> > much better than another. The one thing that has not been presented here
> > was actual facts on a filters ability to remove dirt. As some of you are
> > aware I have become familiar and am now a true believer on regular oil
> > analysis. This is a requirement for warranty for the Cat engine and
> > Allison transmission in my motor home to allow extended drains.
> >
> >
> >
> > Back In March 2004, I obtained a 1988 Fox from the original owner. It had
> > only 14,470 mile on it. I changed all the fluids, using synthetic oil. The
> > tranny got Mobil 1, SHC 75w-90 and the engine got Mobil 1, 0w-40 and a
> > Fram TG2870A filter.
> >
> >
> >
> > 6,000 miles later I took an oil sample and sent it out for test. Results
> > for wear metal were as follows. Copper was 20, Iron 20, Lead 8, Silica
> > (dirt) 19. oil condition rated "A".
> >
> > At 13,500 miles on the oil, the numbers were slightly higher , 36, 66, 35,
> > 21 with a recommendation to change the oil and filter due to wear
> > particles. Condition "B". This took me by surprise as I usually get a
> > suggestion to change oil based on oxidation, nitration, or in the case of
> > the Diesel engine soot loading.
> >
> > So I changed the oil and filter, again using the Mobil1 0w-40 and Fram TG
> > filter. I also replaced the air filter.
> >
> > ~11,000 miles (one year later) I did the oil testing again and got similar
> > results. Condition "B". So I changed the oil and filter except this time I
> > used the Mahle OC47.
> >
> > My wife has been using the car a lot so we quickly did 11,000 miles and I
> > did the testing again. The results were alarming. Condition "C".
> >
> > Copper was up at 78, Iron at 115, Lead at 100, and Si at 53. This with
> > only 53,000 miles on the engine.
> >
> > I changed the air filter and also the oil and filter. I am now trying the
> > Mobil 1 filter.
> >
> > We'll see what happens.
> >
> >
> >
> > Dennis
>
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