Mostly has to do with boiling point and chemical stability of the
fluid. Motor oil seriously begins to break down at about 240F (115C;)
lighter fractions evaporate at much lower temps than that. Brake
fluids (DOT-3 and -4) have boiling points exceeding 200C (dry) and
140C (wet). DOT-5 only has a dry BP, but I don't have the number
handy. I recall it is greater than 220C.
Donald.
> Date: Mon, 30 Jul 2001 10:36:11 -0400
> From: Douglas Braun & Nadia Papakonstantinou <doug@dougbraun.com>
>
> At 09:25 AM 7/30/01 , Howard Allen wrote:
> >The transmission oil is totally separate from
> >the clutch.
>
> This raises an interesting question: Why do
> brake systems need brake fluid? Other hydraulic
> systems (which also have pistons, rubber seals, etc.)
> use an oil-based fluid.
/// spitfires@autox.team.net mailing list
/// To unsubscribe send a plain text message to majordomo@autox.team.net
/// with nothing in it but
///
/// unsubscribe spitfires
///
|