I was taxying behind a Gulf Air A330 in Mumbai when the fire watch tower reported smoke from the starboard engine.Since we were directly behind the aircraft I noticed that it was coming from a small vent from both engines and increased marginally in intensity when power was increased for taxi.Calling the gulf air on a different frequency,the nature of the smoke was described to him and he continued for a normal takeoff.
Is this normal on the A330(not sure which engines gulf air has got).
I am assuming its excess oil or is there any other aspect which I am missing.
