Andy Walker wrote:
> Tim:
>
> If your car sits for long periods of time, you might want to use
> silicone. If you drive it a lot, I would recommend Castrol.
>
> Take care,
> Andy Walker
Andy,
While I do not want to make a recommendation of silicone vs GMLA, I do want to
call to your attention that the normal brake fluid will absorb water from the
atmosphere whether you are parked or driving. One of the biggest culprits is
the method Girling uses to allow the fluid level in the master cylinders of
the clutch and brake to change. As you depress the clutch and brake
cylinders, it must draw in air to replace the drop in fluid level caused by
your displacing it into the brake system. It returns (leaks aside) when you
let up the pedal.
There is a hole in the top of both caps to let the air in. American cars have
long ago gone to a full rubber seal across the cap top that is built like an
accordion. I expands to let the air in, as the hydraulic fluid drops, and
contracts when the fluid returns. This rubber like material is not affected
by either of the fluids, but does provide a positive barrier against air
contact, and the moisture that is in it.
This breathing while used, by the way, could be argued to increase the contact
with moisture from driving, versus sitting. The action of breathing with
temperature changes and ambient pressure changes may also affect the driven
car more.
My recommendation is to see if Jeff, at Tiger Technologies, still has those
rubber bellows seals available for the clutch and brake.
Steve
--
Steve Laifman < Find out what is most >
B9472289 < important in your life >
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