You mention the tranny issue and symptoms after using SeaFoam. What is your question exactly?

In regards to the SeaFoam, if you put the whole can in, you may have used too much. The can says 1 oz. per gallon of fuel, but I think it's a bit much. Here's how I've used it:

12 oz. can of SeaFoam

1/3 can into fuel tank

1/3 can into intake manifold and all 4 cylinders - I add a little to each cylinder through the spark plug hole and let soak for 5 minutes to break-up any carbon deposits. Start car and let run till smoke stops. Rev a little occationally to help burn it all out. Don't burn it off cruising around town, it smokes A LOT for 15-20 minutes.

1/3 can into crankcase - only just before changing the oil; add SeaFoam and run car for around 5 minutes to loosen sludge and other deposits, then drain and add new oil & filter.

I've only done this once, so if you or anyone else decides to try this method, you do so at your own discretion. Please use common sense. I will not be held responsible for anyone injured or cars damaged from not following the manufacturers directions.