I wonder what the longevity is on an engine that has lost significant oil pressure after warm up.
Only the bearing or bearings loosing clearance knows.
I don't believe there should be that much pressure drop with a HV pump feeding it.
Shouldn't be that much of a difference, but he also said that he built the engine quite a bit back... So yeah, starting to get loose. 25 at idle is still good, goes up with RPM is good, as long as running a quality oil, I wouldn't throw the towel in on it yet.
