Re: [Amc-list] quick question...

["Swygert, Francis G MSgt 436 CES/CECM" <Francis.Swygert3@xxxxxxxxxxxx>]

Any of the brake fluid will work and can be mixed -- except the silicone
stuff (DOT 5). All the others are of compatible bases with different
formulations for higher temps. You can mix DOT 3 and DOT 4, but if you
mix any of the others with DOT 5 you end up with gel in the lines and no
brakes or locked brakes -- even a few drops can do it! I ran DOT 5 for a
couple years, but finally took it out. I mistakenly put DOT 3 in twice!
The first time I poured a good bit in (about a year after I switched).
Drain and flush! The second time I only started and got a few drops in
-- I emptied the reservoir with a basting syringe. A few days later the
left front brake started locking up. I flushed the whole system and put
DOT 3 back in! Having to add only once a year you forget. Silicone is
great for a car that sits a lot as it doesn't absorb moisture and will
prevent rust. But for a normal driver it's not worth it. The pedal will
feel a little spongy with silicone also, as it compresses slightly, but
that only affected feel, not braking. It expands with heat also, no good
for something like a road racer. 
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