In a message dated 09/09/2009 12:03:43 P.M. Eastern Daylight Time,
LISTSERV@GERRY.VANAGON.COM writes:

        Oil pressure is due to the  crank and cam bearing clearances.  Oil
pumps produce volume not pressure  !

>>>>>Sunshine, I would look to other causes before  the oil pump.  Numbers
of
others have now told me that they rarely  fail.  More likely, if you
indeed do have low oil pressure (try to  find every reason that you might
be getting the signal despite adequate oil  pressure first), its unlikely
to be due to the pump -- but rather something  more serious, internal to
the engine.  Almost as good a temporary  patch on that as a new pump is
heavier oil, at least while the weather is  warm.  Single weight oil
holds its viscosity better than does  multi-vis, too.  If your vehicle is
running hotter than it should,  multi-vis oil may be thinning too much as
the engine reaches the higher  temperature.<<<<<<<<

Cheers,

Frank  Condelli
Almonte, Ontario, Canada
'87 Westy & Lionel Trains (_Collection for sale_
(http://frankcondelli.com/trainsal.htm) )
_Frank Condelli &  Associates_ (http://frankcondelli.com/busindex.html)  -
Vanagon/Vanagon Westfalia Service in the Ottawa Valley
_Vanagon Stainless Steel Exhaust  Systems_
(http://frankcondelli.com/exhaust.htm)
_BusFusion_ (http://www.busfusion.com/)  a VW Camper  camping event,
Almonte, ON, June 11 ~ 14,  2009