OK, well unless you measure the oil temperature on the way back to the pump from the cooler, then its a pointless exercise. The manufacturer will have done this in combination with the water cooling system for all world temperature zones. The fact they didn't change the spec for Aus or southern Europe indicates the system works well enough in all climates.
The oil needs to reach approx 100c to evaporate water out & work at its best, much cooler & it will have water contaminates which is bad for our plain bearing engines & much more than 120c is bad for the oil, though its rated much higher.
My bike makes 112whp & that is a 17% improvement over stock & in 2013 in 32C heat in southern England being caned on open roads it never got bothered, same in Spain last year. So unless your measure the oil temps & find them way off specs above then leave it alone.