Subaru sandwich plate you nit wit. Comes with pickle.  Only mine was
$39.Not $69. Slightly different,but does the same thing.Bare aluminum.Not
that blue stuff.Check that ebay item number I gave for the lo down on it.At
this point I dont care too much about accurate oil pressure. Just need a
switch of somekind.I have heard that when the oil light comes on in the
Vanagon,while driving,the threshold for the pressure light is set so low
that the damage has already been done,anyway.
If the threads are bad in my engine case,it happened by overtightening.Not
corrosion of dissimilar metals,or such.Like the auxillary air regulator is
in the 1.9 engine case,or thermistat housing.To damage the case,just got to
turn the switch a half turn too much and you are done.Results become
apparent when the switch is removed much later.I do hope it never happens
to you.What would you do if it did? Probably not remove another one if it
was importiant.