Sounds like the same setup I have. I am measuring the oil galley temperature. Mine usually reads around 210-220 degrees F. If it gets higher I have three electric fans zip tied to the oil cooler. On a hot day if I am stuck in traffic it MIGHT get to 230 deg F at the most. I mounted my analog gauge in the center of my fairing in a flat spot above and in between the speedo and tach.
In fact, one time my front fender was cracked in half (long story) and was partially blocking the oil cooler. I might not have noticed right away except that my oil temperature was running noticeably hotter.
Also on the highway if I draft semis, my oil temperature rises about 15 deg F. That's how I can tell I am in the slipstream.