As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE OIL PRESS LIGHT ILLUMINATED (OBSERVED ENG OIL PRESS FLUCTUATE BETWEEN 0 AND 100) DID IT AGAIN FOR A SECOND TIME (SAME SCENARIO) AND WENT BACK TO NORMAL BUT LEFT ENGINE SURGED. FOUND LEFT ENGINE OIL LOW INADEQUATE OIL ADDED 2.5 QUARTS OF OIL. PERFORMED GROUND RUNS ON A/C ALSO PERFORMED TAKEOFF PROCEDURES AND RAN AT TAKEOFF FOR 1 MINUTE. OPS CHECK GOOD. NO FAULTS NOTED