I flew my 3100 on my Kr for over 50 hours with no overheating of the oil. My
cooler is the 11x3x1 they sell at street and sand toys, a local vw super
store. It is mounted on top of the engine across the back and is part of the
rear
baffle. My oil temps never got over 205 and at cruise about 195. But I like to
cruise at 5000 feet or better. But even on a hot Florida day at 1500 feet, it
still does not change a whole lot. My temp sender is at the bottom rear of WW
new oil pan. He seems to think the temps are fine as my oil pressure stays at
48-50 psi at cruise. I now have it on my 2700 and see no difference in temps.
PS. I mentioned "Smokey" he had about 29000 hours in all types of aircraft
and he passed on a couple of years ago. I miss him dearly because I learned a
lot about flying from him just by listening. He made the statement once that
"lessons learned in flying are merely mistakes forgiven"
Warmest regards,
Steve