What was found
#2 ENG OIL PRESS ILLUMINATED DURING FLIGHT. DIVERT TO LOCAL AIRPORT(KSGR), FOR PRECAUTIONARY LANDING. UNEVENTFUL AND SAFE LANDING. UPON FURTHER INSP, FOUND "T" FITTING ON ENG, CLOGGED. REPLACED "T" FITTING, AND START DRAIN VALVE, AS REQUIRED. PERFORMED SEVERAL ENG RUNS WITH PWR CHKS. ENGINE PERFORMED TO SPECS, WITHOUT FURTHER ANOMALIES OR DISCREPANCIES. PERFORMED OPERATION CHK FLIGHT. CHK'D GOOD. ACFT RETURNED TO SERVICE. REM'D PARTS, BEING SENT TO MFG, FOR FURTHER INVESTIGATION.