that doesn't sound unreasonable on the glow plugs. After all, they are what puts heat in the cylinder for combustion when it hasnt been running. The injectors slobbering can and will overpower malfunctioning glow plugs. The oil is somewhat normal, it comes from the crankcase ventilation. The more blowby(wear) the more oil. I would expect some wear on the turbo vanes, however the dent is troubling. That would say that the engine has ingested debris at one time or another. The 7.3 turbos aren't as loud as the 6.0(most generally) They are fixed vanes.