Hi I have had my Late 2013 Macbook Pro for two and a half years now give or take a couple of months, and this is not really an issue that has only just started. Essentially what it boils down to is when the CPU is under heavy load, the diode temperatures are reporting to be hitting as high as 100°C at worst, and usually at least a sustained 90°C+. I have used the MBP to play games using Windows 10, and again the temperatures were really high, consistently around the 90°C mark. I would, however, be able to play games for hours and hours without it crashing, though I wouldn't be able to tell you whether the CPU or GPU ever throttled due to high thermals. The most recent incident of high temperatures was when I imported all of my 5000+ old photos into Photos.app. The CPU usage was high and the CPU temperatures rocketed with it. I know that Intel CPU's are rated to operate up to 105°C, but I am concerned that these temperatures are going to dramatically decrease the life span of the CPU. I am way out of the warranty period by the way. On my old 17-inch MBP I did open it up and apply fresh thermal paste to combat similar temperatures, but I cannot remember if it really made much difference. Any thoughts? Thank you.