Not enough can be said about the inaccuracies of the electrical oil pressure sender, and that a mechanical oil pressure gauge is about the only way to be certain of what your oil pressure is. My fairly new to me '70 2+2 was showing poor oil pressure at speed ~15 - 20, and more worrisome at idle ~5psi OUCH!

Mechanical OP gauge is now in the picture, and the worries are over. Like I stated, not enough can be said.

Just sayin'