i've just ordered some dba 4000 series slotted front discs, ebc greenstuff front pads, and blackstuff rear pads for my r33 gts-t. i was going to put in some castrol response super dot 4, but the guy i spoke to today told me the fluid will be inadequate for the setup im running. he's reccommending i should use a racing fluid. anyone agree/disagree with this? would response super dot 4 be good enough? car is used as a daily, but will occasionally see some decent thrashing!