I hear they have this deal to flush transmissions but I prefer to take the pan off the bottom and replace the filter and scrape all the gook out of the pan. $45.00 is reasonable with a new filter. To you neophytes - changing the filter and fluid every fifty thousand miles is cheap. Replacing the transmission may cost more than another used car.
Transmission Flush vs Pan Drop with Filter Change: My Observations. That baby holds over 17 quarts total. Still only requires 4 quarts for a pan drop. Truck requires every last bit of oil it has because the dam things normal operating temperature is between 210 and 220 degrees. Way to hot for transmissions in my eyes.