i let my 2154 deere processor cool down while i grease at the end of the day in the summer.. i usually reverse my hyd engine fan and blow there dust out of the rad then let it idle, gives the oil more time to run through the coolers and cool down. Seems to work. don't have any crisp hoses or o rings and we work in hot hot dry sumer conditions
that extra 15 minutes or so a day does add up up on a hour meter over a year. But with jdlink now, Its easy to show high load hours and idle hours and not to worry much about whats on the clock but how hard the machines actually worked in its life.