Wouldn't it be something if the new water-cooled GS didn't function as designed because we will be putting American water in its radiator? I know BMW blames our fuel for many driveability problems and other bike functions like fuel strips. I can hear it now when a dealer says, "Sorry Mr. Customer, but the factory (BMW) says your R12XXGS is overheating due to the use of USA water in the radiator. However, I have some BMW brand water available....just $37.28 a quart!" DON'T LAUGH JUST YET.