We spun the #1 bearing testing a couple weeks ago. We just about have everything back together, but we are worried about what caused this in the first place. We have a pretty big aftermarket oil cooler on the car and the oil pressure is over 100 until the engine heats up (at which point it then drops into the 70-80 range). The oil pressure sensor is positioned just before the oil is pumped through the cooler. We were chatting about this and started to wonder if the oil cooler could be restricting the flow of oil in some way, maybe even enough to fail to lubricate things on the other end of the block.

Is this a legit concern? Does this even make any sense?

TIA.