Oil Cooler Thermostat

[dothedr3w]

Is there any sense in running an oil thermostat in addition to shutters/louvres over the oil cooler?

[patrick.hvac]

Is there any sense in running an oil thermostat in addition to shutters/louvres over the oil cooler?

In my opinion, depends on the climate, but yes.
I have the cabin heater on my radiator thermostat bypass line, which removes heat from the heads as well as an oil thermostat. Oil normal is 190-230F (Rotax manual)
I have found that in cold ambient temps (<15F) the oil cooler and radiator are in full bypass and I am not able to stay above 212 even in a climb, also run out of cabin heat. It stays above minimum (120F) easily but I need tape or shutters to have useful heat and drive out moisture from the oil.