They put ONE HECK OF A cooling system in these tractors!!! Just shy of 100* here today in Northwest Montana and i mowed all afternoon with the A/C on full blast. Even in Regen the gauge would hardly move! Started getting a tad bit warm and found the screen nearly plugged but it NEVER overheated! With my old New Holland i would have been stopping every 20 minutes to let the old girl cool down!!! I AM IMPRESSED!!!!!!!!