My Mog has been using Dot 5 since it was rebuilt by Kevin in the late nineties and during the entirety of my ownership since then, only changed once during the replacement of the torn dust covers on my front callipers, and while I was at it I cleaned up the rust on the exposed to the elements sections of the pistons, there was no need to change the fluid, as such but I thought to do so while I was also checking for seized bleed nipples all round....
According to that which I have read... Dot 5 was developed for the us military given changing brake fluid on every vehicle every two years for vehicles either in conflict zones or in long term, sometimes very long term storage, is a task that if it could be avoided, seemed worth investigating.... Thus DOT 5 appeared on the scene... and to the best of my limited knowledge... NEVER EVER to be mixed in a system that has had DOT 4 used in it....?
I suspect when Kevin rebuilt what is now my +8, he stripped and thoroughly cleaned any re-used brake parts fitted new seals or replaced cylinders in their entirety, new pipes and flexibles before filling the system with AUTOMEC DOT 5... and fitting a warning label to the master cylinder warning NOT to top up with anything other than DOT 5 .
I believe Automec Dot 5 is available at Halfords in the UK.
Please correct me if you feel I might have got anything even slightly incorrect or entirely wrong..
