What was found
(CAN) CREW RECEIVED AN IDG LOW OIL PRESSURE MESSAGE. MOC WAS CONSULTED AND RECOMMENDED CONTINUING TO DESTINATION WHERE THE GENERATOR COULD BE LOOKED AT FOR A POSSIBLE FIX OR DISPATCH UNDER MEL. CAPTAIN DETERMINED THAT BEST COURSE OF ACTION WAS TO RETURN TO DEPARTURE. FLIGHT RETURNED TO YUL AND CARRIED OUT AN OVERWEIGHT LANDING. RESOLUTION NR 2 ENGINE IDG REPLACED IAW T/C A32X-24-21-51-000-040-A-4010 AND T/C A32X-24-21-51-400-042-4200.