ENGINE OIL LOW, NO LEAK

2001 CHRYSLER SEBRING 92,321 MILES V6 ENGINE
i AM CONSTANTLY HAVING TO PUT OIL IN MY CAR TO KEEP IT LEVEL. AFTER 1 OR 2 DAYS OF DRIVING THE OIL LIGHT COMES ON.I CHECK IT AND THE OIL IS VERY LOW. IT WILL ALSO SHUT OFF AND THE CK ENGINE LIGHT THEN COMES ON? I RECENTLY HAD AN OIL CHANGE AND THE LUBE TECH STATED THERE WAS JUST A SMALL AMOUNT OF LEAKAGE. WHERE IS ALL THIS OTHER OIL GOING? IT IS NOT ON THE GROUND. OR EVER IN MY DRIVEWAY. PLEASE ADVISE AS TO WHAT YOU THINK THE PROBLEM MAY BE? CAN IT BE REPAIRED. OR SHOULD I GET RID OF THE CAR.