Originally Posted by
Avionista
All BA A320s have IAE V2500 engines whereas Easyjet aircraft have only CFM engines. Although Easyjet have a larger fleet of A330/A319 aircraft, BA seems to suffer more 'fumes in cockpit' incidents. This suggests that the IAE engine may be the culprit. I understand it has a higher oil pressure than other jet engines thus putting greater stress on its oil seals.
It's the difference in pressure on either side of the seal that makes the difference. So unless you define the seal that resulted in a leak the oil pressure in the system is a moot claim