If a single MGB pump fails, the pressure will drop to 5 psi and the temperature will rise.
If the oil is being dumped overboard as seems to be the case in the Cougar crash the pressure will presumably fall and the temperature will rise.
As we now know, one event is not too bad for your health but the other can realy make your eyes water
Assuming you can't see the oil p-----g out, How can you tell the difference from cockpit indications?
P3