Cars Sealed

Hello, I own a 2006 Toyota Tundra sealed automatic transmission will be worth it to keep it?
This car comes with automatic transmission sealing machine, you can not be repaired either. So it's a kind of call, difficult though Toyota cars are very good I'm still a little worried this issue. Please give advice! I will thank you!
Just Because TransMixer is "closed" does not mean you can not give service. It simply means that it is more difficult to "service."
car slash some what stereo comp.