I have pretty much same clutch setup with v1 HD CSC but stage 3 along with GTM supercharger. When I used to run rbf 600, my clutch would get very soft during some NYC traffic and would get softer on hot track days. I switched to castrol SRF and never looked back. From my own experience and periodically checking the fluid using brake fluid tester, the SRF treated me much better than RBF and would last much longer before absorbed moisture.
Last edited by fryzia23; 07-12-2024 at 06:56 AM.
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