It has not gotten hot enough to make any claims but so far so good!!!! for the past few years I was not able to cruise over 80mph for any sustained time or the temps would climb. I thought It was the radiator not getting enough flow through it. So I had plans for closing up with a small tray/cover. Fastforward to now after a new bumper(wider opening), dual oil cooler(touring), 100 miles on the engine and everything else being the same that temps problem seem to be HISTORY!!
It seems to run way cooler now, and If I let it get hot the cooling fans bring it right down to an average of 88 C. the hottest its gotten was in stop and go traffic and it went to 89C once back on the highway cruising 80mph it acutally cooled down to 87C. Granted it wasnt Hot by any measure but I'm very satisfied so far!

Oh, I forgot...I havent been able to bring down the idle from around 1850 so.