Engine combustion chamber, oil galleries, coolant galleries, and external. Depends on where a crack is, what it leaks into. That is, if it is cracked. For some reason the shop felt that there was engine damage, however. We don't know what caused them to conclude that, it may have been a pressure test.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue