[tonythetarga]

There are no cheap Porsche’s! If you paid little cash then there is probably plenty of maintenance that has not taken place. Once you get this problem sorted, start going through the fluids. Have the coolant checked, not the level but effectiveness! Change the oil and have a sample analyzed. Blackstone Labs will send you sample containers and a mailing envelope.
Replace the brake fluid with a full flush. Keep records of everything.
Sounds like yours is a tiptronic. Maybe replace trans fluid too.
Baseline your ownership with a normal service.