Coolant Reserve System Radiator cap

take off the overflow/recovery bottle cap.
look at the two hoses coming down from the inside of the cap.
The "overflow/puke" hose should be much shorter than the ""recovery" hose.
Recovery hose should go to the bottom of the tank.
Puke hose should end well above your 1 qt. full line.

heres a later tank for a visual...

radiator line goes in at top and tube runs down to bottom (left side)
puke line has opening near top of bottle (right side)