Hi Matthias-
If that’s the real (accurate) temp, it sounds like you are right on the money.
190 is hot enough to keep the oil heated correctly, and below the boiling point of the coolant.
If the temp stabilized there, you should be in fine shape.
What thermostat (type & temperature rating) are you running?
Regards -
Chuck
P.s. My capillary mechanical gauge sender is there, and my gauge consistently reads about 180.