Re: 2005 Mazda 3 GT leaking transmission fluid
Mine had started leaking fluid as well after I had put in the K&N CAI. It was fine at first, but when I had changed it to the "short ram", the leak bursted out from the bolt-on pin that was connected to the hose line. It wasn't very hard to replace after you have taken out the stock air filter, but then again, it took me about two and a half hours to take the darn thing off.
I like my Mazda but as you said, I'm also starting to find out some things about it's reliability. My motor was replaced at about 38k and everything started to go down hill from there. My car stalls out when I warm it up in the morning and it also has been jerking really weird when I use the steptronic shifter.