I do believe that was my point.
At 05:49 PM 1/21/99 -0500, Keith R. Stewart wrote:
>> Brad, Other than the obvious picking up of impurities, It was explained
>> to me that brake fluids are magnets for humidity and that when you run it
>> through the interaction and activity adds moisture to the fluid and
>> it through puts moisture (water) back into your lines. I was even told
>> that break fluid shouldn't be used if has been opened for awhile (like I
>> follow that one). I figure why take the chance.
>> Patrick Bowen
>Might want to rethink that one Patrick...DOT3 and 4 fluids are
>hygroscopic...that is they ABSORB water. Increased amounts of water in the
>fluid lessen its effectiveness. This is the reason for changing the fluid
>every two years. Thus, if an opened bottle of hydraulic fluid sits around,
>it IS absorbing moisture, whether in use or not! Actually, this is one of
>the reasons some people switch to DOT5 (Silicone) because it is not
>However, there are other issues to consider...eg. DOT5 is not hygroscopic,
>therefore IF water gets in the system, it sits as water and can cause
>corrosion. That's why you have to decide which is best for you.