Well today I got to use my new to me B7100. It really surprised me how well it did. It has been real hot here and today was no exception, around 93 and 70% + humidity. I had been reading the threads on the cooling system on the 7100's and I was familiar with this system from working in a IH dealership years ago, so before we even started and not knowing the previous history of the tractor, we pulled the rad and gave it a good cleaning, as mentioned here it was pretty well plugged up with grass and debris. The machine is a 1996 and only has 455 hours and looks brand new but I guess this had been neglected. The 60" mid mount mower worked very well in the 8" + grass. The little tractor never labored a bit and never showed any signs of overheating, so needless to say I am pretty proud of my Kubota..... 
Thanks for all the great info that is shared here !
Thanks for all the great info that is shared here !