Trans cooler bursts!

[tcalz06]

I jut bought my first H2 2 weeks ago and I just did this mod. I have a 05 with 37k on it.

Has anyone else done this recently?

I'm curious if anyone else noticed when they un hooked the bottom line on the radiator if the fluid that came out had what seemed like some water in it.

The top line coming out was straight tranny fluid so I thought this was weird.
I checked the trans fluid when I bought it and just had it changed so I'm pretty sure mine hasn't burst but why the difference in the fluid from the top of the radiator to the bottom????

I'm curious to see what the trans temp does because I'm in AZ and I was already seeing 150+ trans temps at about 70 degrees outside
Thanks