Tim, have you seen the tread on mazda3forums.com about doing a catch can on our cars?
http://i38.photobucket.com/albums/e111/smokinAMD/catchcan/IMG_0609.jpg
That is after 2 weeks of driving.
http://i38.photobucket.com/albums/e111/smokinAMD/catchcan/IMG_0610.jpg
After letting it sit overnight. Defined layers of gas, funk, and oil.
with seeing that id be certain to say the oil in the speed3 is being diluted really bad.