Help: Overheating & coolant - 2006 S281 Extreme

[rocky]

Hi I'm new to the forum i have a 2006 sc 281 extreme with only 5000 miles on it ,before i go out for a ride once a week i check under the hood if averything is ok i check the fluid, oil and the coolant in the small reservoir for the supercharge i cant see no fluid so a start up the car i put in like half gallon of 50/50 coolant and after my little ride maybe of 50 miles the coolant from the supercharger, its like it bypass to the radiator reservoir i have to transfer fluid from one tank to the other whats going on, i had the car for six month i went thru 2 gallon of coolant already i cant see no coolant on the ground and i cant smell no coolant leak wtf need help