[Lanny]

Many old cars sit for long periods of time, and the dot 3,4 and 5.1 all
attract moisture, and if the car sits for long periods, the moisture
tends to rust the system, especially the wheel cylinders.
The glycol based fluids work OK, if you drive the car monthly
to keep the moisture from settling.

I use dot 5, silicone based fluid, as it Don't attract moisture, and
it don't eat the paint if you happen to spill a drop.




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