What was found
ACFT DEPARTED WITH NO PASSENGERS AND 2 CREW. AT CLIMBOUT TO CRUISE FLIGHT CREW NOTED SMOKE IN CABIN. CREW RAN SMOKE IN COCKPIT CHECKLIST AND ELECTED TO CONTINUE TO DESTINATION AS IT WAS ONLY A FEW MILES AWAY. LANDING WAS UNEVENTFUL WITH NO EMERGENCY DECLARED. MX WAS CONTACTED TO PERFORM INSP/MX ON THE ACFT. ON INSP, NOTED NR 1 ENG HAD OIL EVIDENT IN THE SPINNER/ BEHIND THE FAN. CONTACTED MFG HELP DESK AND BELIEVE PROBABLE CAUSE BEING AN INTERNAL CARBON SEAL. THE ENGINE WILL NEED TO BE REMOVED TO VERIFY DEFECTIVE PART AND REPAIRED.