Water will be evaporating pretty rapidly at 200 degrees, or 180 for that matter. Does it really need to boil in the oil to get rid of it?
Mike,
The answer to that question depends on whether you want to eliminate some of the water or all of the water from the oil. Evaporation is an equilibrium process and depending on the atmospheric conditions, some water will evaporate at any temperature between freezing and boiling. OTBE, the higher the temperature the higher the rate of evaporation, but evaporation will never get rid of all the water in the oil; doing that requires an oil temperature
in the sump high enough to boil the water. Boiling the water out of the oil is only part of the process; the other part is removing the water vapor from the crankcase (typically via a PCV system).
My previous posts were responses to specific questions and related to
modern engines which run
hot all the time. Series Alpine engines are
not modern and I am not suggesting that they should consistently operate with a coolant temperature of 210 F. and an oil temperature of 230 F. Doing that would require coolant and oil systems that can maintain those temperatures under all operating conditions (idle / cruising / running hard / full throttle). Like most 50+ year old cars, stock or near stock Series Alpines do not have that capability.
One solution is to frequently run the car hard / hot enough to get rid of the water in the oil, but not hot enough to adversely affect the engine or the oil. That is something which I would not attempt without having known accurate gauges for oil pressure, oil temperature and coolant temperature and being confident about the mechanical condition of the car. The other solution (older than Series Alpines) is frequent oil changes to temporarily get rid of the water and living with relatively short engine life.