Wow... 70k miles and you're blowing smoke. I'm almost at 58k and haven't noticed any smoke issues yet.

I'm curious to know at what mileage others with N62 started smoking from valve stem seal issues?

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2004 X5 4.4i
2001 E46 M3
1995 E34 525i
2008 Acura MDX
1984 Maserati
2011 997 Turbo