At 02:25 AM 4/3/99 -0800, you wrote:
>    Could somebody please tell  me about Brake Fluid. What the DOT 3-4-5-?
>pertains to?
>                                         MtnGal
>
DOT 3, 4, and 5.1 are 'standard' alcohol based (polyglycol?) fluids, and
are interchangeable; as the numbers go higher, the boiling point is raised,
moisture absorption *may/should* be decreased.  Go fast types are using the
5.1.

DOT 5 is an altogether different fluid, silicone based, and absolutely NOT
compatible with the 3, 4, or 5.1 fluids.  It's a royal PITA to use DOT 5
(BTDT), has definite drawbacks in addition to its main attribute, which is
that it doesn't absorb moisture.

Overreaching marketing will try to sell you 'sythetic' brake fluid which
isn't even 5.1!!!  Valvoline only 'meets/exceeds' DOT 3&4...big whoop.
But, it IS synthetic  - they ALL are!!!  (brake fluid doesn't really exist
in nature, right?)

Austin