Hi… We’ve been waiting for half a year for our M3 to be delivered. They had some problems with delivery due to the introduction of the Facelift… our actually ordered model is actually still there, so we got one of the first delivered Facelifts delivered. At this now still parking aids and so on and in the next days we can pick it up then… I have often read that it is worth another one. Doing cavity sealing to avoid possible early rust… Is it also necessary for the M3? The problem with the M6 was probably the problem. What is your opinion? and what does this fun cost at Mazda??? Thanks in advance. MazdaBA