went for a 2 hour ride today,80 and sunny here in richmond...Decided to detail the bike after cool down,the one thing i didnt think about until today was how much krud and bugs get into the fins of our radiators..If enough covers the radiator this would probably effect cooling to some degree ,not saying it would hurt the engine but every little bit counts,but anywho i found that if you use a toothbrush and gently brush the fins i was able to get 99% of the radiator clean................