A ‘new’ engine normally requires running in, slow timing it used to be called by the B-17 crews. The advice now on light aircraft is high power runs with a straight oil until oil consumption has stabilised. This suggests that some oil loss is normal which can only be past the rings.

I don’t know whether Sally Bs engine is new or not, no doubt someone will soon provide the answer. However, I’m sure the crew were keeping a close eye on Ts and Ps at the time.