And I thought I was the only one. Several years back I had a Thunderbird SC that I was doing a transmission fluid change on. With that car, there's a plug that allows you to drain the torque converter. So everything's going well, I have all the fluid out, new filter in, ready to start pouring the fluid back in. I carefully measure what I've taken out, about 11 quarts if I remember correctly, and proceeded to install 11 quarts. I looked under the car, and to my suprise there was transmission fluid all over my garage floor. I quickly mopped up as much as I could and then dropped the transmission pan to see what I'd done wrong. Couldn't find a thing. So I put it back together, and of course all the fluid is now wasted (expensive Amsoil no less). As I'm getting ready to refill the transmission again, it dawned on me. The new fluid has to be pumped into the torque converter, it wouldn't just flow. I'd over filled the transmission, and it had come out the vent tube. Doh!