What was found
"AT FL 230 90% N1 ON BOTH GOT ENG OIL PRESS WARNING MESSAGE ON LEFT ENG. OIL PRESSURE FLUXUATION BETWEEN 23&39 PSI RAN QRH MESSAGE WENT AWAY, WE THEN BROUGHT POWER ON L/H ENG TO 61% ABOUT 10 MIN LATER GOT THE WARNING AGAIN RAN QRJ AGAIN AND THIS TIME MESSAGE DIDNT GO AWAY, WE DID A SHUT DOWN ON THE L/H ENG AND COMPLETED A S/E APOH AND LANDING WITH NO FURTHER PROBLEMS HAD ARFF LOOK OVER A/C NO PROBLEMS FOUND. R/R LH ENG IAW JOB CARD 200-71-00-00 OPS/LEAK CHECKS GOOD.