What was found
DFW - FLT 2386 - AFTER TAKEOFF SAT DURING INITIAL CLIMB, OIL SMOKE, AND FUMES NOTED IN AFT PORTION OF MAIN CABIN. SMOKE AND FUMES DISSIPATED AFTER APPROXIMATELY 2 MINUTES AND AIRCRAFT PROCEEDED TO DFW, LANDING WITHOUT INCIDENT. TIGHTENED EXTERNAL OIL LINE ON APU. ACCOMPLISHED PACK BURN-OUT PROCEDURE AND REPLACED ALL COALESCER BAGS. ACCOMPLISHED GROUND ENGINE AND APU RUN AND OPERATED PACKS WITH NO SMOKE OR FUMES NOTED. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)