As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INBOUND TO DESTINATION, NOTICED A THIN STREAM OF CLEAR LIQUID COMING FROM THE TOP VENTS OF THE LT ENGINE. THE CREW DECIDED TO RETURN TO HOME STATION TO HAVE FLUID AND POSSIBLE LEAK REPAIRED. REPLACED DEFECTIVE FUEL FILTER O-RING ON LT ENGINE. (K)