I switched at about 100K.  There has been no noticeable leakage or
increase in oil consumption.  I seldom add more than a half quart
between changes.
   When I first put in the Mobil 1, the van seemed to idle smoother, but
maybe that was my imagination.

Larry A.

Rob wrote:
> At  8/24/2005 11:53 AM, Larry Alofs wrote:
>
>> Personally I would use 20/50 only if I felt the oil pressure was low.
>>   Before I went to Mobil 1 (15W50), I used 15W40 Rotella T from Shell.
>>
>> I use 15W40 in all my vehicles other than my vanagon.
>>
>> Larry A.
>
>
> I've heard that it's not a good idea to change to synthetic oil in a
> high mileage engine.
> Any thoughts on this?
>
>
>
> Rob
> becida@comcast.net
> Western WA state with no VW right now... but I'm looking
>