The water pump was leaking antifreeze into the oil. The hose to atmosphere to warn you the water pump seals have failed was plugged with mud. Replaced the water pump, top end, cam, thermal switch in radiator and installed a switch to manually turn the fan on. Aliexpress was 1/3  the price of US Cfmoto for some of the parts. All back together and running better than new.

[2015 Z Force 800 53/Trail EPS]

Good news for sure.