Link or any supporting document?
Originally Posted by bimmerdiesel
Its not only top off. BMW also follows similar rule. They drain and refill on alternate oil changes. So under free warranty you will be entitled to 2 drain-refill
Updated SIB160109 does not require purge of DEF anymore and don't see any reason why BMW dealers would do otherwise unless some other condition requires it.
2013 335i F30
B45, LCSW, ZMM, ZDH, ZPP, ZTP, 337, 2TV, 428, 494, 688, 6AA, 6AB, 6VA
2010 335d E90 - Gone
300, LCAD, ZPP, ZSP, 2XA, 302, 465, 494, 4B9, 609, 655, 677, 6FL, 6NF