I have a 97 Honda Accord with 280K. Recently, I pulled over from driving to check a map and when I put my car back in D, the engine just raced like it was in neutral when I gave it gas. The reverse gear worked for a bit in the parking lot, eventually no shifter position resulted in movement of the vehicle. In D & R and only on a small number of throttle applications, the car started moving forward slightly, similar to that brief moment before the clutch on a manual transmission is fully engaged. Before I pulled over my transmission was working absolutely perfectly. The AAA tow guy and several repair shops told me over the phone that the auto transmission needs to be replaced (~$2000). Not worth it with the age of the car. Its now sitting in my driveway. Ideally, I would tow it to a mechanic and have them verify this for sure. Im not sure its worth spending the money just to confirm this. Is there much of a chance that this problem would require a repair that doesnt involve replacing the entire automatic transmission? Thanks
One more question. It may take a while before I sell it. I plan on starting the engine once every 2-weeks or so to keep the engine in good order and battery charged. Should I add an oil or gasoline preservative?