I've a pwr radiator, oil temp sensor, trans temp sensor and egt gauge. I also have an intercooler in and out temp gauge, boost boost and air fuel ratio guages.
I have an auto and fully loaded, probably circa 2.7t +, going uphill on 40c plus days I would redline the radiator temp gauge.
I added a bigger trans cooler, an engine oil cooler from pwr, water injection , pwr radiator, vented the bonnet. Engine was also tuned.
Tuning helped with the egts. I think my egts were higher than normal because I run lpg fumigation too, more fuel, more heat. The major factors building up heat, based on the gauges were the trans oil temps and the egt. The trans runs through the side of the radiator and the torque converter builds massive heat. I've seen 130c++ plus in the hills.
I added a torque converter lock up. Trans oil Temps sit around 60c - 70c now Goin uphill.
This will be my first summer with these modifications though....