Mint condition 1968 Delta 88 custom holiday coupe, all original

This car is in mint condition the exterior paint and the interior have never been re-touched or repainted. The car was well maintained and running fine when it was parked three years ago. The car has not been started for over three years but it is been garaged during the entire time. This is the single owner vehicle that's been garaged since day one. They had no children and no smoking so the car is super clean. All maintenance has been done through the OldsMobile dealership in Durham. over the years my aunt drove this car up until the last three years when she's been hospitalized or in nursing home so therefore it is not been driven. There is some transmission fluid that has leaked from the vehicle onto the garage floor due to the drying out of the seals. The mechanic told me that this is normal for a car sitting for this time frame.The oil is perfect. I have not started the car because the mechanic told me not to start the car because it has sat for a period of time, until a mechanic has re-loaded the fluids.