[Vwdiesel] oil pressure problems

[David Kysar]

I have about 3000 miles on a rebuilt 1.6NA.  Recently the oil light started
fashing at idle.  I replaced the oil pump, vacuum pump, and senders.   I
also installed an oil pressure guage.  When I am driving the pressure is
typically 15 - 24 psi, but averages about 17 psi.  Is this OK?  I have tried
SAE 30 and 20w40 oil both give about the same pressure.  The first 5 minutes
till I warm up I have strong oil pressure (20 to 40 psi) but when the temp
guage climbs to about the halfway point to pressure goes down.  Should I be
concerned?

thankyou,

Dave Kysar
85 Jetta Diesel 1.6NA