On Tue, 15 Jul 2008, clare@snyder wrote:

On Tue, 15 Jul 2008 11:40:17 -0700, wrote:
What about using plain old DOT3 automotive brake fluid?

NOT nan flammable, by a LONG shot

It's always been my understanding that it's non-flammable, so I looked up
several MSDS's for DOT 3 brake fluid of verious brands. Some say, "Not
classified by OSHA as combustible"; and some say, "OSHA/NFPA Class IIIB
combustible liquid", which near as I can determine, means the vapors can
be made to burn, but apparently it's much less flammable than anything
petroleum-based. Looks to me like a better bet, flammability-wise, than
something I know WILL burn very well, given the chance.

and not compatible with aircraft "O" rings.

Now that could be a problem. A little research with Google indicates some
aircraft brakes are fine with it, and some aren't. So I'll have to check
into that, and change seals if necessary, before making the switch.