How often do you need to do a transmission oil change in a 2008 Toyota tundra?

Believe it or not you can not check the transmission oil on a 2008 Tundra with a 5.7 leader engine. It is designed to go 100,000 miles before servicing and IT MUST BY DONE BY THE DEALER. it has to be brought up to a certain temperature and need a special tool to check it. Talk to a Toyota service manager if you don't believe me.

I had a conversation with a service manager and he said "You can't believe how many people drain the transmission and then can't figure out how to refill it and have to tow it back here to get it fixed."

Also look in your "Owners Manual" and you will not find anything on servicing the transmission by the owner.