2003 CHRYSLER SEBRING Engine Problems

I WON A CAR FROM MY LOCAL CHRYSLER DEALER. THE CAR HAD A 2.7L V6 ENGINE IN IT THAT NADA AND KBB DO NOT LIST SUCH AN ENGINE IN THIS TYPE OF CAR THAT I WON, SO I CAN ONLY ASSUME IT WAS A DEALER SWAP PRIOR TO THE RAFFLE DRAWING, BUT THEY DENY THE SWAP WHEN I CALLED THEM ABOUT THIS INCIDENT. WHEN I WON IT, LAST JUNE IT HAD LIKE 181,000 MILES ON THE CAR, UNKNOWN MILEAGE ON THE ENGINE, BUT I HAD IT FROM JUN TO DEB 2016 AND DROVE IT MAYBE 9000 MILES MAX AND IT FAILED WITHOUT WARNING. I CHANGED THE OIL EVERY 3000 TO 4000 MILES, SO LIKE 2-3 TIMES SINCE I HAVE HAD THE CAR AND IT HAD NO INDICATION OF ANY ENGINE PROBLEMS PRIOR TO SPONTANEOUS AND COMPLETE ENGINE FAILURE. I HAVE MY CARS SERVICES REGULARLY FOR TIRE ROTATIONS, CAR INSPECTIONS ETC....

START CAR, WHEN IN IDLE IT SHUTS OFF WITH IN A FEW SECONDS OF HITTING GAS NOW. IT USE TO IDLE AND I WOULD HAVE TO REV A LITTLE SO IT WOULD NOT TURN OFF. THAT WORKED FOR A LITTLE BIT TODAY TO BROKE DOWN. LUCKILY IN MY DRIVE WAY THIS TIME INSTEAD OF THE MIDDLE OF ROAD LIKE LAST WEEK. WHY IS MY CAR DOING THIS?

ENGINE FAILURE DUE TO OIL SLUDGE. THIS IS, APPARENTLY, A COMMON PROBLEM AFFECTING THE 2.7L V6 ENGINE. *JS