What was found
ON CLIMBOUT, NR 2 ENGINE LOW OIL PRESSURE LIGHT ON. CHECK LIST COMPLETED AND LIGHT STILL ON. SHUT DOWN NR 2 ENGINE PRECAUTIONARY. CREW DEBRIEF REVEALED NO OIL PRESSURE LOSS AND NO OIL QTY LOSS. DISCOVERED OIL DIFFERENTIAL PRESSURE SWITCH LEAKING. REMOVED AND REPLACED PRESSURE SWITCH IAW DC8 MM 79-33-1. INSPECTED MAIN OIL FILTER FOR CONTAMINATION, NO CONTAMINATION NOTED. AS PRECAUTIONARY MEASURE, REMOVED AND REPLACED MAIN OIL FILTER IAW DC8 MM 79-20-1, OPS AND LEAK CHECK OF OIL FILTER AND PRESSURE SWITCH GOOD.