  I provide a calculation at full two-loop order of the complex pole squared
mass of the W boson in the Standard Model in the pure MS-bar renormalization
scheme, with Goldstone boson mass effects resummed. This approach is an
alternative to earlier ones that use on-shell or hybrid renormalization
schemes. The renormalization scale dependence of the real and imaginary parts
of the resulting pole mass are studied. Both deviate by about $\pm 4$ MeV from
their median values as the renormalization scale is varied from 50 GeV to 200
GeV, but the theory error is likely larger. A surprising feature of this scheme
is that the 2-loop QCD correction has a larger scale-dependence, but a smaller
magnitude, than the 2-loop non-QCD correction, unless the renormalization scale
is chosen very far from the top-quark mass.
