Date: Tue, 6 Feb 2007 17:02:07 +0000
Reply-To: dhaynes@OPTONLINE.NET
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <dhaynes@OPTONLINE.NET>
Subject: Re: Oil pressure Light and appropriate oil filter
In-Reply-To: <45C8ACDE.2040107@verizon.net>
Content-Type: text/plain; charset=us-ascii
Sam,
Somewhere, someone confused things. Both those filters from Mann/Mahle have the anti drain back valves. The difference is the vanagon requires a bypass valve in the filter. The Golf/Jetta engines have the bypass valves in the oil filter mounts. The bypass though is only needed if the filter is becoming restricted or if the oil is too viscous to flow through it. Most after market suppliers use the same number for both applications as it does not matter if there is an extra bypass valve in the filter.
Dennis
----- Original Message -----
From: Sam Walters
Date: Tuesday, February 6, 2007 11:39 am
Subject: Re: Oil pressure Light and appropriate oil filter
To: vanagon@GERRY.VANAGON.COM
> Frank,
>
> If the Hengst H14W04 filter you are using, and selling to your
> customers, is the same as the MAHLE/KNECHT 0C 108, as you
> identify it
> to be, then that is the same filter structurally as the Mann/Mahle
> filters that are recommended on the list routinely and sold by
> many list
> vendors. It also has the same properties as the OEM filter -
> i.e., the
> valving inside, that is absent on the Bosch and Fram filters.
>
> According to a post from Jim Thompson about 18 months ago, "Mann
> 719/12= Mahle OC 108 = 070 115 561 = Vanagon 1.9/2.1 VW
> specifically calls for
> this filter for the Vanagon and nothin' else."
>
> Bus Depot sells both the Mann 719/12 and Mahle OC 108 filters as the
> only ones appropriate for the Vanagon's WBX. At least one other
> filterfrom each of these companies will fit, but it doesn't have
> the anti
> drain back valve and therefore isn't the right filter.
>
> So, what you are doing in not something different from OEM - it
> is an
> appropriate filter with same valve deemed so advantageous for
> the WBX
> engine. This is good.
>
> I write this so folks wouldn't interpret your post to mean that
> it was
> OK to use filters other than those with the anti drain back
> valve. This
> valve insures sufficient oil in the engine at start up.
>
> The following is from a post by Ron Salmon, from the same thread
> as the
> Jim Thompson quote above: "As for the differences, this issue
> has come
> up on the list many times throughout the years. At one point a
> listmember actually emailed Mahle in Germany to ask them the
> differenceand whether it really mattered. Here was
> Mahle/Germany's reply:
>
> 'The main difference between OC 108 and OC 47 is inside these filters.
> OC108 has an anti-drain valve at the filter, OC 47 not. When you
> use OC
> 47 for your car (VW Tranporter/Vanagon) than you can get
> problems when
> you start your car. The motor is at this time always to long without
> oil. OC 108 have also a better paper quality than OC 47, and the
> pressure bypass is different. Please use for your car OC 108, to
> get no
> damage at your car or motor.'
>
> So there you have it, right from the horse's mouth." (end of
> Ron's post)
>
> Sam
>
> --
> Sam Walters
>
> Baltimore, MD
>
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