Originally posted by jclary
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Silicone has been a material of choice for many years as a di-electric fluid/grease to resist corrosion of electrical connections.
I've had several brake switches fail with Dot3/4 over the years but not Dot5. That's not a large data base as my cars with Dot5 are treated much better than the ones with Dot3/4.
It's possible that with the hydrophylic Dot3 on the other side of the diaphram moisture will permeate into it while the Dot5 won't allow it. I'd like to see them pack the switch with Silicone fluid and that should be the end of those issues unless there is something in the formulation of Dot5 that causes corrosion.
Bob
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