CDV Hydraulics Explained

[terraphantm]

I was under the impression that the cars without the precharge pump didn't need DOT4 LV. Let me see if I could find the corresponding info in TIS.

Edit: Other way around according to TIS. So I guess we all need DOT4 LV. I wonder if Castrol SRF is considered LV. (despite what the Bentley says, 2003+ M3s have the MK60). Ideally I'd like to flush the system completely before putting in the SRF as it's quite expensive

Also I want to mention, I was always on OE fluid with my old ZHP. I did notice a difference with the CDV, but I will admit it wasn't night and day like a lot of folks claim. It was noticeable however -- and that makes sense. Just because it is "low" viscosity doesn't mean the effect will be eliminated. I also don't know if you can blame the issue entirely on brake fluid, since the CDV was installed in cars that don't specify DOT4 LV






I do think you might be right about the effectiveness of the ABS system. I noticed last winter that my ABS didn't seem very effective. It felt like it was getting triggered way too early, and more importantly, it felt ineffective at actually allowing me to stop. I didn't make the connection with SuperBlue until now.