THE ENGINE HAS BEEN REBUILT AND THE BUICK WAS SERVICED ON A REGULAR BASIS.MY DAD WAS PLANNING ON SELLING THE BUICK, BUT HE HAD UNEXPECTEDLY PASSED ON. ALSO WANT TO MENTION THAT 20,000 MILES ON THE BUICK SINCE THE ENGINE WAS REBUILT. I BELIEVE THERE ARE OVER 200,000 MILES ON THE BUICK SINCE BEING PURCHASED.