(condensation doesn't collect in the oil?
WoW this is interesting:Link copied and pasted below.
http://www.mobiloil.com/USA-English/MotorOil/Car_Care/AskMobil/How_Does_Water_Get_in_Motor_Oil.aspxWater can get into the oil two ways. You generally don't have to worry about one of the ways if you drive your car enough to burn off the water during normal driving. This drives off the moisture that simply comes from your engine breathing when it is not being used (cold air enters a hot engine and water condenses) and from combustion by-products. The second more destructive route is through a coolant.
I live a mile from the beach we to get a lot of condensation this time of year it's nothing to worry about!