Castrol SRF brake fluid and alternatives

[(steven)]

I still find my brakes are going off more than I would like while on the track despite having EBC blues on.

Before I make the move to some more extreme/expensive pads or a big brake kit I thought I would try braided lines and posher brake fluid (currently using an off the shelf 5.1 Dot from my local motor factor).

Castrol SRF gets a good write up but at £40 a litre I should hope so. Ate super Blue also has a very good name for itself but at £10 a litre it’s a bit more attractive.

The question to the group is, is Castrol SRF worth the 4x price increase or will something like Super Blue be fine?

[(steven)]

Paul_M3 said:

If the pedal is getting spongy and closer to the floor, then you're correct that fluid is your problem.

It's this plus they are not even recovering the next day which to me suggests cooked fluid.

I've been using a suction bleeder running off my compressor and I think its introducing some air into the system, so I've also purchased a pressure bleeder for when I next replace the fluid.