What was found
45 MINS AFTER T/O DEPARTUE AT FL 340, NR 2 OIL CLOG LIGHT ILLUMINATED. FOLLOWED QRH PROC, SHUTDOWN NR 2 ENG AND RETURNED TO DEPARTURE. REMOVED AND REPLACED NR 2 ENG OIL PRESSURE SWITCH AND OIL PRESSURE DIFFERENTIAL SWITCH. RAN NR 2 ENG IAW JRH - NO " OIL CLOG " ALERT WAS DISPLAYED. ALL ENG PARAMETERS WERE NORMAL. OPENED AND SECURED CLOSED NR 2 ENG COWLINGS IAW AMM 71-13-02 AND 71-13-03. MEL IS NOW CLOSED AND STICKER REMOVED. ACFT OK FOR SERVICE.