Brucelee: Sorry, I thought all DOT4 was synthetic.
Tool Pants & markk: Is ATE Super Blue ok for the ABS system? I haven't used it yet, but thought about it. I was told DOT5 was not to be used in an ABS system, so I want to make sure Super Blue is not a similar problem with ABS before I put it in. I'd like to swap to the Super Blue in the Boxster and 928 if it's ok to use. They both call for DOT4 fluid.
Thanks!