Oil Pressure and Canada Show and Shine

["James LaLonde" <deloreandmcxii@xxxx>]

Got back from Marv Stein's Show and Shine in London, Ontario. Great 
time had by all, I'm sure. 14 cars at one point!! I had a wonderful 
time and met some really great people!

Well (Just after you took the radio back from me Shannon :P ) on the 
way back my oil pressure dropped considerably. About 50-60 psi at 
speed and ZERO at idle.
Well I kept up with the caravan, and made our way to the point that I 
split off to head home. And stopped to check my oil. Everything fine. 
Engine carpartment had no sign of abnormal oil leakage (my normal bit 
around some areas of the bottom of the engine). So I headed home and 
made it there w/o incident.

I checked the connections of the sender and saw nothing wrong.
I bought my sender from John Hervey @ SpecialTauto. I don't know if 
you have the "oem" units, John. But I 've heard they usually read too 
high.... which is not the case here. MAybe it's the guage? or wiring? 
How could the pressure *actually be* low. Could the pump be going 
out? I would think an oil pump would either work or not, but what do 
I know?

If it comes to it: when the engine is cold will removing the sender 
cause the oil to leak out... or is it all down in the pan at that 
point?

Any other ideas?
Thanks!!
James L 4009