how do u know when your supercharge oil needs to be replaced or changed on 1995 Buick Riviera

have had my riv for almost 6 months now has over 200,000 thousand miles on and car has been driving funny lately recently replaced fuel filter and valve cover gasket fuel relay fuel pump and thermistat but car starts jerk at 55 not wanting to accelerate until let off gas and press again and then will accelerate not sure what is going on

Asked by for the 1995 Buick Riviera
its not the supercharger possible fuel pump or misfire if we hook it up to a scanner is the best way to start thr diagnostic procees