I eat my R6
Join Date: Dec 2014
Location: Southwest Ohio
Bike: 2008 Yamaha YZF-R6s Stock
Re: Coolant issues
Note that it's normal to have some water dripping from the hole at the bottom in the exhaust. Water vapor is a normal component of the air intake and this is one of the ways that water vapor build-up exits the exhaust system.
Oil and/or coolant at that hole, can be an indicator of a problem. A "block test kit" (search Amazon) is a chemical test on the coolant, to see whether combustion gases are present. Pump up cooling system pressure testers are also available on Amazon. However, one must be extra extra careful not to overpressurize the system or it will be damaged. "Maximum" pressure is typically listed on radiator caps and is typically very low.