[DML] Re: Brake and clutch fluid for storage
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[DML] Re: Brake and clutch fluid for storage



Silicone fluid (DOT 5) is no longer being recomended for use in most cars unless you require the extremely high boiling point which is mostly required for racing applications. In most other cars the use of silicone is a bad idea for several reasons.
The first is compressablility. You cannot get ALL of the air out and since air is a gas (under normal pressures) your hydraulic system becomes part pneumatic. In some cars, mainly older cars without power brakes, you run out of pedal travel before you can make the brakes stop the car. Pumping the pedal can work but not the best thing in a panic situation.
The other big reason is water is not mixable with silicone. Moisture will collect in the system and aggregate into the lowest parts of the system. There it will corrode the metal and when you flush and bleed the system you will not get it out because the bleeders are always at the higher points in the system to trap the air.
The best advice is to flush the brake and clutch every 2 years. If you can't do it and you want LONG term storage my recomendation is to try to blow the system dry and then flush with alcohol and then blow it dry again. Figure on rebuilding the brake and clutch system after LONG term storage. Cars are not made to be stored. For example no matter what steps you take the tires will be garbage after 7 years, the battery after 5 even if you trickle it. Remove ALL of the fuel. The coolant too. Fluids will eventually go "bad" and destroy the parts they are in. I would also drain the motor and the transmission. Don't forget the windscreen reservoir.
David Teitelbaum

--- In dmcnews@xxxxxxxxxxxxxxx, Cecil Longwisch <dmc82@...> wrote:
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> What is the current thought on the "best" brake and clutch fluid for long term storage of a DeLorean? In the past I have used silicone in my classic cars that do not get much use because the theory was that it did not pick up moisture from the air and thus kept down corrosion. 
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> How compatible is this with our rubber components? 
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> [Non-text portions of this message have been removed]
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