The AUSubaru.com.au Forums

found this an interesting read on brake fluid DOT numbers

http://ebcbrakes.com/articles/brake-fluid/

Interesting, DOT 4 becomes DOT 3 if you leave the lid off too long They say in there "brake systems are carefully balanced precision systems - most important the RIGHT type of brake fluid to be used"
What does that mean for us mixing and matching bits from all kinds of different models? No longer carefully balanced or precision engineered...but still better than the stock system

Meh; fluid in, pads and shoes in, air out and you'll be right.. Hahaha