1989 BMW 325I Engine And Engine Coolingcooling System Problems

PROBLEM WITH COOLING SYSTEM BEGAN WITHIN APPROXIMATELY ONE MONTH OF PURCHASE DATE (. CAR BOUGHT USED, FROM MECHANIC/BMW AUTHORIZED REPAIR SERVICE (SAME MECHANIC IN FOLLOWING NARRATIVE). NOTICED 1): COOLANT LIGHT COMING ON; COOLANT LEVEL SLIGHTLY LOW; TOLD PROBLEM WAS DEFECTIVE COMPUTER CHIP, TOLD TO KEEP EYE ON COOLANT LEVEL; BROUGHT CAR IN AGAIN BECAUSE LIGHT COMING ON MORE OFTEN, COOLANT LEVEL LOW TO EMPTY IN OVERFLOW AFTER MEDIUM-LONG DISTANCE DRIVE (75 - 100 MILES); TOLD TO JUST KEEP PUTTING COOLANT IN OVERFLOW, NOTHING WAS WRONG; ASKED MECHANIC TO CHECK THE COOLANT SYSTEM EVERY TIME WE BROUGHT CAR IN FOR REGULAR MAINTENANCE; SAME PROBLEM CONTINUES, BUT TRAVEL DISTANCE IS LESS (50-75 MILES), BROUGHT IN AGAIN, TOLD RADIATOR LEAKING; MECHANIC PUT STOP-LEAK IN IT; SAME PROBLEM, EVEN LESS TRAVEL DISTANCE (30 MILES); REPLACED RADIATOR; SAME PROBLEM CONTINUED,(AFTER DRIVING 25-35 MILES), TOLD TO KEEP EYE ON COOLANT LEVEL; TRAVEL DISTANCE 13 MILES, LIGHT...

THE VEHICLE OVER HEATED. *JB