I have had an oil temp sensor on mine for sometime. I pull a 12.5K 5er. My GCW is 19.5K. The sensor is in the port beside the OEM oil filter. At cruise it sits at 190*. When working hard, it will go up to 210* I have never seen it higher. The coolant temp seems to be in lockstep about 10* cooler FWIW
jgr
jgr