What was found
STRONG ODOR IN COCKPIT AND , SMELLS LIKE OIL OR PLASTIC DURING TAKEOFF AND DESCENT, STRONG ODOR. CHECKED TI SENSORS IAW AMM 36-11-07 ON BOTH ENGINES, NO SIGHTS OF OIL OR UNWANTED MATERIAL, RAN BOTH PACKS OFF APU BLEED & COULD NOT DUPLICATE ODOR. REMOVED EXCESS PETROLIUM JELLY FROM COALESER BAG HOUSINGS AND REMOVED AND REPLACED COALESER BAGS IAW AMM 211-54-08, OPS & LEAK CHECKED OK.