Does an 1998 Oldsmobile 88 have advanced OBD system?
No, a 1998 Oldsmobile 88 does not have an advanced OBD system like OBD-II's later iterations (OBD-II was standardized in 1996, but features evolved). It has OBD-II, but it's an earlier implementation. It will likely support the basic diagnostic trouble codes (DTCs), but it might not have the same breadth of data available as later models. You won't find things like live data streams as readily available as in newer vehicles.