Oil furnace smoking? hi I have a grease furnace and i noticed some brief smoke...

hi I have a grease furnace and i noticed some brief smoke coming out if the chimney after the furnace kicked on what could that be?
Answers:    It is time for service, the smoke is cause by a slight delay on ignition, the grease comes out for a second before it lights. You want a new filter, unmarked nozzle, adjust the electrodes, and adjust what is called the smoke. You should call upon a service company that specializes in grease furnaces.
This is normal, some oil will give bad a smoke according to the grade, you enjoy three grades of oil. Don't verbs.