Nissan Sentra Radiator Leak

Hello, I Have A 2004 Nissan Sentra. I Just Bought It Second Hand 2 Months Ago. It Started Giving Me Starting Problems And I Got It...

My Nissan Sentra 'drinks" A Lots Of Water/antifreeze ,, There Is No Leak In The Radiator Or Holes , I Maintenance Every 3 Months, Runs...

I Have To Add Water/antifreeze In The Radiator Of My Nissan Sentra Every Other Day ' There Is No Leak I Already Check For That,the Car Runs...

Leaking Of Coolant, Radiator Was Fix And Hoses But Still Leaking Specially When The Car Traveled Approximately 12 Km And The It Leaks...