What was found
KSFB - KHPN THE CREW REPORTED A SMELL OF BURNING OIL OR A BLEED AIR ODOR FILLED THE COCKPIT AND CABIN ON TAKEOFF. THE ODOR CONTINUED DURING ALL POWER CHANGES AND WHILE VARIOUS POSITIONS OF THE ENVIRONMENTAL CONTROL SYSTEM WERE SELECTED. THE AIRCRAFT WAS DIVERTED TO KPBI FOR MAINTENANCE. MAINTENANCE REPLACED THE RIGHT ENGINE ASSEMBLY DUE TO AN INTERNAL OIL LEAK. THE AIR CYCLE MACHINE COALESCER SOCK WAS REPLACED DUE TO BEING OIL SOAKED. NO DEFECTS WERE NOTED DURING GROUND ENGINE RUNS AT VARIOUS POWER SETTINGS. THE AIRCRAFT WAS RETURNED TO SERVICE.