Skinny
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Flushing with fresh fluid will not break up anything inside the trans. It is the heavy detergent the dealer sells as a 'flush' will do the damage you describe. I've performed many flushes on old rigs and even personal cars without ill effect if
A) the correct fluid is used
B) no detergents used before flush
C) no friction additives added after
There is alot of old fluid in the converter which a flush quickly swaps out. A flush is not going to hurt a trans anymore than a drain and fill, it just performs it faster. You can D and F a trans three or four times to get the same effect but a flush machine does it faster. One thing I would highly recommend is changing your filter as the TurboHydramatic uses a cotton filter which requires servicing unlike alot of metal mesh screens on a modern trans which does not require dropping the pan.
A) the correct fluid is used
B) no detergents used before flush
C) no friction additives added after
There is alot of old fluid in the converter which a flush quickly swaps out. A flush is not going to hurt a trans anymore than a drain and fill, it just performs it faster. You can D and F a trans three or four times to get the same effect but a flush machine does it faster. One thing I would highly recommend is changing your filter as the TurboHydramatic uses a cotton filter which requires servicing unlike alot of metal mesh screens on a modern trans which does not require dropping the pan.