As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A/C RETURNED FROM CRUISE WITH ALL FLUCTUATING PARAMETERS ON ALL THREE ENGINES. VERSILUBED FUEL CONTROLS ON ALL THREE ENGS. TESTED FUEL WITH TEST KIT AND NO CONTAMINANTS FOUND. RAN ENGS PER PFHD AND NORMAL. FUEL TANKS DRAINED AND FRESH FUEL ADDED PRECAUTIONARILY.