My Humble appologies,
Lucky I didn't follow the instructions on the DOT5 packet and just add it to a
previously drained system.
I Quote "no need to remove all traces of the old DOT4 mineral brake fluid as
the two types are safetly compatible"
Cheers
Tim
Barry Schwartz wrote:
> and the general
> >thought is that DOT4 does mix with DOT5, but you get the worst of both
> >worlds
> ****************************************
> I don't know who told you that DOT 5 would mix with DOT 4 but they are
> incorrect - and obviously never tried to mix the two. They are not
> compatible and will not mix anymore than oil and water will. If you pour
> DOT 4 into DOT 5 it will, like water in oil, form little balls in the fluid
> or enough, will form its own layer, and no amount of agitation will cause
> them to become permanently combined. Eventually the two will stabilize and
> settle out, again just the same as oil and water would. Silicon oil is NOT
> hygroscopic (will not absorb water), while the other glycol based DOT
> versions will. Therein lies the main difference. There is a DOT 5.1 (I
> believe it's .1) that is compatible with existing glycol base fluid, and
> quite possibly that is what the person(s) were referring to, but Silicon
> fluid (DOT 5) and/or glycol based (DOT 3, 4, and 5.1) definitely are NOT -
>
> Barry Schwartz (San Diego) bschwart@pacbell.net
>
> 72 PI, V6 Spitfire (daily driver)
> 70 GT6+ (when I don't drive the Spit)
> 70 Spitfire (long term project)
--
Tim Dafforn
Structural Medicine
Department of Haematology
CIMR
University of Cambridge
Wellcome-MRC Building (Level6)
Hills Road
Cambridge
CB2 2XY
Tel. (01223) 336829
Fax. (01223) 336827
http://smokeroom.cimr.cam.ac.uk/
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