Started up the car to cruise to a show yesterday and noticed the gauge (70 Cuda)was reading very low. The gauge fluctuated slowly between half reading and none. I hit the highway thinking that if its going to give way then its now or never. The gauge acted the same and there was no apparent ill effects on the car (No noise, smoke or otherwise) A mechanic at the show suggested it was the oil pressure sending unit and just replace that. I looked at the unit and found that I had replaced that piece during an underhood detail session with a new unit only about a year ago.
So is it the unit, oil pump or something in the gauge?