Frank,
Won't this data be worthless unless everyone uses a shop-quality oil pressure
gauge to take the measurements?  The VDO dash gauge covers 80 psi over a
distance of about an inch and a half, in 10 psi increments.  I've heard from
a couple of knowledgeable folks that the VDO isn't sensitive enough to react
to small pressure fluctuations, and hence is limited in use as a diagnostic
tool.

Best,
d.
1990 GL -- "Mudskipper"