That is the fluid you want for your GM transmission. It is a certified/licensed Dexron VI, which is the current spec.

Don't worry about the word synthetic, it means very little with fluids as the word isn't controlled or defined. Mobil call this fluid a synthetic blend, which is probably true, and also offer a different "full synthetic" but that oil doesn't meet the Dexron VI spec, it is a generic fluid. Stay with the licensed one. GM don't care about the word synthetic for their Dexron VI standard, just whether the fluid meets the performance standard or not.

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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