Originally Posted by
scifi
So can we blame our IMC Pilots for this? , as prolonged cloud flying
is the only way water could have got into the engine.
I hope you are joking.
Its not a closed system, the oil breather line is open to outside air.
Every time an engine is shut down as it cools it draws in ambient (humid) air.
Same with daily heating and cooling cycles as the aircraft is parked outside.
Not running the engine long enough or hot enough to boil off the water causes the oil to go milky over time.