Hydraulic reservoir

[John Mackie]

My comments to Lynn in post 12.
I grew up with the old brake fluid that was made from caster oil and metholated sprit, we used metho to wash up brake cylanders . then we got mew high temp fluids that had a higher boiling point but were water soluble, we used water to wash them up.
I restored a truck many years ago and used silicone fluid I think it was Ok.

Recently I bought a hydraulic stop light switch (13480) Marathon and in the packet it had a note NOT TO USE THE SWITCH WITH SILICON FLUID !!!

I an currently restoring a Ford truck (11T ) and will not be using silicon fluid in it.

[Harry Moon]

I used methyl hydrate to flush mine. I've been using silicone fluid for 40 years with never a problem but for the last few projects i use a pressure bleed system and fill the systems from the wheel cylinders or slaves. the pedals are hard right away and if replacing a brake sensor(too often grr) a quick push from the closest wheel cylinder clears any bubbles out of the system.the trick is not to create and bubble up the fluid.