Jere,

As the engine gets hotter, the oil gets thinner, and consequently slides
through all the tiny spaces too easily - especially since, as the engine
gets older, the spaces tend to get less tiny.

More viscous oil is harder to push, kinda like squeezing honey through
the small orifice in the top of the bottle.

Karl Wolz

> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On
Behalf Of
> Jere Hawn
> Sent: Wednesday, March 23, 2005 11:44 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Oil Light Question
>
> Hi All,
>
>
>
> The van is running! Now the oil light comes on when I come off the
freeway
> from 70 mph after a 25 mile trip.  I can rev the engine up and the
light
> goes off.  Then after a minute or so of slow driving I can let it idle
with
> out the light going off.  This happened when I used that cheap
Wal-Mart oil.
> I changed it and the problem went away.  This time I have Castrol
20-50 in
> it with a Phram filter.  I just got a few filter in from Bus Depot and
will
> be changing them our.  The question is why is the oil light going off
in the
> first place? Oil too thick and getting stuck up in the engine or too
thin
> because it get too hot or is there something else?????
>
>
>
> TIA
>
> Jere
>
> 90 GL/Carat-a-version
>
> (latest addition are the Carat alloy wheels)