What was found
DURING FLIGHT 2754, RECURRING LT ENGINE OIL PRESS FLUCTUATES/CONSUMPTION. LEFT ENG OIL PRESSURE FLUCTUATES BETWEEN 50 AND 80 PSI, NO RELATED INDICATIONS BELIEVED TO BE GAUGE NOT ENGINE. DECLARED EMERGENCY. MAINTENANCE REPLACED LT ENG OIL PSI GAUGE P/N 522794, S/N OFF 04871374, S/N ON B592A, IAW AMM 79-50-15, OPS CHECK GOOD.