1. Miles on the vehicle--76,000 miles (bought new)
2. Old fluid color--pink/red
3. Small metal shavings or particles in the old fluid--negative, except the 3 pieces of magnet were covered with muddy stuff from wear and tear.
4. After the 30,000 miles service done by the dealer, I drained & refilled the tranny myself every 15,000 miles using only Toyota T-IV fluid.
If it is mechanical problem, why the clunk/shake disappears for a day after I reset the computer? Could it be the ECM going crazy? I just don't want to go back to my dealer, after I was told twice by them on some other issues, " They all do that!”