Oil temp threshhold for engine breakage? (Mainly Merlin engines)

[*Buzzsaw*]

Originally Posted by Dirkan

Hi!

Has anyone tested the exact oil temperature at which the engine will break?
Or perhaps too much boost in combo with RPM, regardless of oil temp?
The radiator always breaks at 120 Celsius, 10/10 times, however, the oil temp is a bit more elusive.
(I don't give a rats ass about the pilot notes)

Thanks in advance

Taking all aircraft but the Spit IIA over 98 degrees is a mistake, the Merlin III might not break immediately, but there will be consequences.

The Spit IIA Merlin XII can run at temps below 105 degrees below 5000 ft, but as you get higher, the temperature limitation threshold drops. Over 10,000 ft, not a good idea to go over 95 degrees.