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      11-05-2011, 09:10 AM   #35
IS350
IS350 to IS-F to M3 and M4
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Drives: 2015 M4 (F82)
Join Date: Aug 2007
Location: South Carolina

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I'm betting your dif oil was changed, that's norm, it's the transmission fluid that they're apparently no longer changing. I'd call your service mgr. up and verify. Congrats on the car! Did you avoid redline or wot? Man it's tough!!