Hello I have corolla 2010 gli running on 20w-50. Last year I visited nathia in July. It was extreme humid outside and the temp feels like 52-54 C. I have an obd2 in my car so I observe the reading regularly. That day the coolant temp was fluctuating between 95-101 C. I don't understand why It was going so high. I was concerned about the coolant level but Alhumdulillah the coolant was full when I reach Islamabad. The one reason I think might be the culprit was AC as this car was previously owned by my uncle and the AC compressor was changed to a city compressor which puts a lot of load on the car.other wise the car is perfect is this coolant temp normal for this kind of temp outside