Brake fluid recommendations and volume

[banhama]

I've been using Castrol React but would welcome any other recommendations for a track/race only brake fluid
Also what quantity would I need for a full flush?
The system is standard, still with ABS pump, just has 6 pot calipers on the front which I can make an allowance for.
Many thanks
Andy

 

[banhama]

PS. I have previously use Performance Friction RH555 (now RH665) race fluid on my Subaru and it was excellent.
Has anyone used RH665 in a racing Clio 182.
And yes, I forgot to say in the title post its a 182