You have to find out if the problem is oil temp or oil cooling. I f the cooler is working and the oil is going in at a low tem and coming out hot there could be other issues. In order to find out if your oil cooling system works. the oil in tank temp is where you need to check. The peak oil temp inside the motor is irrelevant. It could be 300 degrees at the bearing and run forever, but if it is going into the motor at 300 that is not cooling.