I have a Volvo 5.7GSi gas engine with a heat exchanger.
When the boat is running at my normal cruise speed of20-22knts, the temp is 160.

I have a remote dual oil filter system. The filter housing has a port for a sensor.
Out of curiosity I installed a
water tempgauge and sensor in the empty port.
Whenmy antifreeze temp is 160 my oil temp at the filter is 200 degrees.

Is this a normal oil temp?

Any info on the relationship of the antifreeze and oil tempsand the possible engine problems this may indicate is appreciated.