Almost every time I ride my 05' cfr450r, I have to put in about two cups (1 pint) of coolant. I just run Peak 50/50 pre-mix because it uses so much. I'm not about to use the much hyped 'Engine Ice" at the price they ask for it. My question is that since my bike does not leak coolant and I never see the radiator cap blow steam, where does all the coolant go? And should I try a high pressure cap? Are those safe? I was thinking that maybe my cap vents slightly and I'm not seeing it. And one last question - When I'm riding and have to wait for somebody, should I immediately kill the bike and never let it idle?