Good job Spud. What may be the same cooler, mounted a bit differently and plenty filthy, indicated 240 degree oil in the tank during a 1 1/2 hr. trip home on pavement from the Daniel Boone N.F. Road speed was 65 - 70 mph, ambient air temp was about 75 degrees and the bike is geared 14/45.
Don't sweat a little bit of mud.