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June 08, 2003
Actually pure water would in theory work in a hydraulic brake system, but
has some practical disadvantages!
It boils at too low a temperature.
Boiling hydraulic fluid creates gas (steam) which is compressible so your
brakes go spongy.
It would also cause rusting of cylinder walls, pistons etc.
It wouldn't lubricate the rubber parts as well.
So although it would work, it wouldn't be much good.
DOT 4 will actively attract and absorb moisture over time, but when under
pressure the absorbed water will unabsorb back into water droplets, cause
rusting, turn to steam and become compressible.
Silicone won't attract water, so there is much less chance of it getting
into the system. So should last longer. But if water does enter it won't
get absorbed and the end result is much the same.
Best thing, either way, is to drain and refill every 2 years anyway. 'Cept
perhaps if you are in Arizona?
Guy
"Guy Weller" < Guy.Weller@... > 22514
Posted on June 8, 2003 09:22 AM
Posted to category(s) Braking System
| Cooling System
| Engine (external)
| Engine (internal)
| Fuel System
| Gauges
| Lubrication System
| US States
