What was found
OIL LEAK ON BACK SIDE OF FIREWALL, UNDER THE PANEL ON THE ENGINE OIL PRESSURE HARD LINE AFTER COMPLETING ENGINE CHANGE DURING FIRST ENGINE RUN-UP, FOUND EXCESSIVE CORROSION ON THE LINE WHERE IT PASSES THRU THE FIREWALL INSIDE THE FIREWALL GROMMENT - SUSPECT LINE CRACKED WHERE IT WAS CORRODED AT WHEN BEING FLEXED DURING ENGINE CHANGE. INSTALLED NEW OIL PRESSURE LINE.