- Dec 23, 2007
- Reaction score
- Members Ride
- VE II SV6 MY12 SPORTWAGON
It takes just a moment to join our fantastic communityRegister
Silicon brake fluids can’t be mixed with glycol based brake fluids. So if you want to use it you’d need to purge all glycol remnants from the system before filling with silicon fluid. This is a big job and required full disassembly (master cylinders and all slave cylinders/callipers). You need to wash all parts with metho to clean them fully (including pipes). Then all parts must be dried and new seals used through before assembly and fitting. Finally you can fill and bleed with silicon fluid.
DOT5 silicon and DOT5.1 glycol/borate brake fluids have the same dry and wet boiling points (260C/180C) so there is no advantage to using silicon brake fluid for performance and/or racing any longer. DOT brake fluid comparison chart here.You use it on race cars because it won't cook and fluids get changed very often. You don't use it on daily road drivers because it won't absorb moisture and keep corrosion at bay