While I've heard these arguments before, this has not been my experience. I
switched on our Westy as soon as we bought it in '96, van then had 160k kms on a
VW rebuild, never had synthetic. (I have every receipt since new). Still running great
(aside from Vanagon Syndrome) 7 years and ~40-50k kms later. I switched to
synthetic Redline MTL on my 85 Jetta trans at 200k kms - still running great at 480k
kms, has never leaked a drop.

On 18 May 2003 at 21:07, No Name Available wrote:

> One should never switch to synthetic oil during the life a of a mototr that
> has been living on non synthetic. The reason behind this is (from my
> understanding) oils do have some natural deposits in them, kinda like home
> brew beer. these deposits make microscopic grooves in the metal and they also
> build up over time in the motor creating a film. This film is what keeps your
> compression good and your oil in the motor, the build up around the seals is
> essential. So when you go throwing perfectly brewed synthetic oil with
> detergents in it it breaks down the deposits and thus you will spring leaks
> and comprimise the integrity of your motor.
>
> Sooo always drink unfiltered beer and stick with castrol 20w-50....
>
> stay away from bud
>
> Chris
> VT
> 91 westy (no leaks 157k)
>
> PS this also goes for trannies and front diffs....
>

--
Shawn Wright
http://Zuiko.sls.bc.ca/swright
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