As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER APU STARTED ON THE GROUND BOTH PACKS WERE TURNED ON. AN OILY SMELL WAS EVIDENT IN THE COCKPIT. AFTER TAKEOFF THE SMOKE DETECTOR IN THE FWD MID CABIN LAV CAME ON AND THE SAME OILY SMELL WAS EVIDENT IN BOTH THE CABIN AND COCKPIT. OILY SMELL DISSIPATED AFTER APPROX 15 MIN OF FLT. RAN APU AND PACKS FOR 1 HR, NO OILY SMELL DETECTED.