Question on Automatic Transmission Fluid Change

If I check the trans fluid cold and let the overfilled fluid drain I then proceed to start the vehicle, run through the gears and then take the drain plug off car is still running I then wait for the fluid to dribble out so I can take a temp reading. Thing is there is no fluid coming out. I then add heated fluid 93-113 degrees go back and start the car, run through the gears once again then proceed to undo the drain plug not overflow and still no fluid, the pan is reading like 130 degrees, if I turn off the vehicle and take the drain plug off I get fluid but now it is at 122 degrees. I let the vehicle get COLD and then take the drain plug off and a get one quart of expensive fluid pissing out. So basically it is telling me it is over serviced, i checked the overflow tube to make sure it is not cracked not so I am now stumped. Love the car hate this process

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[Nick at Pelican Parts]

When in doubt, I always measure how much fluid is drained, before I begin to refill. This way I have an approximate amount of what will go into it. The Agitronic transmission holds about 4.5 liters in the sump, this is about how much you should be refilling. If it leaks out cold and not warm, this tells me it is not yet full. If you are struggling getting the level correct, might be better to let a pro finish the job. Having the wrong fluid level could damage the transmission.

- Nick