As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GNDED. STRONG OILY SMELL, ODOR THROUGHOUT CABIN & COCKPIT. FOUND THE OIL COOLER TO GEARBOX LINE O RINGS LEAKING WHICH WERE REPLACED. A SATISFACTORY LEAK & OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO ODORS BEING NOTED. SEE AALA201601119010 & AALA201601139007 FOR ADDITIONAL INFORMATION.