put a oil temp gauge on your car, and run it with the cooler, then without.
you tell me what happens.
ive taken oil coolers off ALL my TRs and they have been just fine.
This was my experience also. Oil temp sender in the pan. Temps rose about 10-15 degrees without the cooler. Never over 210. I think a good cooling system helps also. The block walls are cooled, the oil also gets cooled as it splashes the block walls.
Lots of guys have said we NEED the oil cooler, none of them have oil temp gauges.
Mark E.