i had this problem for the last 6 mo0nths now.all i do just top it up with some oil from time to time.i,ve been to renault and they've cahnged the glow plugs,preheater,accelormeter and air temperature sensor.the white smoke it's still there but not as bad.took it back today and said that the engine it;s on it's way out and reccomend getting rid of it.i'm not that sure though.
johnnyl
November 2009