Quote Originally Posted by 02tahoeindiana View Post
Ive definitely considered flushing the transmission and kept telling myself I would but now it seems I may be at the point where it could cause more hurt than help. 218kmiles on factory fluid and it still whips shifts with the corvette servo. Fear is that i could stir up so many particles i could end up clogging the valve body once its flushed and put back together. Have you added any upgraders, bigger cooler or corvette servo? Mine shifts so firm still its amazing. Plan on heading out to SC to pick up a new boat then pulling it all the way back then taking it 10hrs the other way to brostock and back so that will be the breaking point im guessing if it decides to start to slip that will sure create some heat.
I agree 100% do not flush a trans with that many miles on the fluid. The new fluid will be so abrasive it will eat out the seals and you will have leaks then a full failure.

I used to see this all the time at Ford when I was a tech. Old cars or high milage would come in 1 week for a big service and trans flush. Then come back the next week with trans leaks, just to be told the trans was trashed now.

The best thing you can do is change the fluid every 15-30K miles depending on if its a tow vehicle or hard city driving. Change the filter in the trans and keep driving.

I have personally never flushed all the fluid from a trans on my cars only drop the pan, clean it, replace filters, and refill it.