My E46M3 asked for service intervals at 2x the normal rate due to all the track miles. I went through Service intervals 1,2, and then 1 again all under 50K. I never performed preventative maintenance the car didn't ask for and the motor was still running like a champ at 70K miles and burning very little oil (for an M3 that is). I'll say the car saw extreme use. With SMG I could keep it near redline for 20min stretches nearly averaging WOT in texas heat.
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