Changed the spark plugs since I had no information when they had been done previously. Easy task, only the driver's side was a bit problematic since the car has Eberspächer parking heater installed and its piping made the space quite tight, especially for the most rearward plug. Not sure if it is like that for all M62 E53's. I had to use a +60 cm (~24") extension and an access next to the strut tower to get it out.

Attached a picture of the old plug next to the new one, not sure how a well used one should look like.

Attached Images

 

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09/2003 X5 3.0i Sterling grey

Ex 02/2003 X5 4.6is Estoril Blue