Somewhere (I believe the Mobil 1- 800 phone number on the box) I heard that
you are not supposed to use Mobil 1 wherever Teflon is present.  This is
specifically on any oil filters in conjunction with the Mobil 1 oil. From
what I am told - many oil filters have Teflon in them and can't be used with
Mobil 1 oil.
I ran Mobil One  5-50 weight for over 150,000 miles in my 88 Westy.  In all
that time there was never a Mobil One filter available for an 88 Westy. If
you did use a Mobil One oil filter - which catalogue number did you use?
I failed to mention that I had chronic valve tapping on my old engine often
while using Mobil 1. The tapping would go away after the engine was really
warmed up ( about 15 to 20 minutes of driving). When I called the 800 Mobil
number - they recommended that I use 5 - 50 weight oil in an 88 VW.

Alan Ruffalo
88 Westy

----- Original Message -----
From: "George Jannini" <georgejoann@JUNO.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, April 21, 2001 6:30 AM
Subject: Re: chronic valve tapping

> Bradley, you said:
>
> <<  I have a tap that comes and goes weekly. It's beginning to be very
> annoying.  I only drive to and from work (about 2 miles each way) every
> day, so it's tough to run the engine for the 30 or so minutes it takes
> for the lifter to pump back up. >>
>
>    I switched from using Castrol 20W50 oil to Mobil1 synthetic 15W50
> after experiencing the dreaded oil pressure warning buzzer a few times
> during long distance highway runs.  Since changing brands, I have not
> heard the buzzer, and an additional benefit turned out to be that the
> occasional lifter noise that I used to get after the bus sat idle seems
> to be gone for good.
>
>    I change his oil at around 8,000 miles now.  The bus has gone about
> 156K miles so far, and I would especially recommend synthetic for anyone
> who travels a lot, because for me, road trip oil changes are a royal
> PITA.
>
>    Can't say for sure, but using Fram filters up until and for a while
> after I switched to the Mobil didn't appear to effect either lifters or
> oil pressure, but I now use VW recommended brands.
>
>         George/ATL
>         '89 Westy, Wernher
> ________________________________________________________________
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