I don't remember off-hand and mine isn't at work today. But you can find out by pulling the lines and sticking them in a bucket, then firing it up. That's how I found out. You're going to get messy anyway when installing the cooler. Do it while the engine is cold so any splashing tranny fluid won't be hot. It doesn't come out with crazy high pressure.

If you can get someone to fire it up for you that's even better.

when looking for a container to hold drained brake fluid, find a container that is different from the beverage you are currently consuming.