The refurbished trains generally ran on the Port Melbourne, St Kilda and Sandringham lines. They never ran in the City Loop, except for a farewell tour on 6 April 1991. The restriction to these three lines was due to the additional weight of the refurbished carriages; while the passenger areas were upgraded and included two air conditioning units per car, the mechanical components were still unmodified, and still using the 1960s-era second series motors, which were in fact less powerful than the first series cars of 1956.