[T3] Battery Install, Oil Change & Brake Fluid Reservoir

[Gary Forsmo]

Do *NOT* mix DOT 5 with DOT 5.1.  They are not compatible.  DOT 5.1 is more
like DOT 3 or 4.

On Mon, May 13, 2024, 3:45 PM William Hoyer <wjhoyer at gmail.com> wrote:

> DOT 5
>
> Here is what I found about DOT 5 brake fluid.  Looks like 5.1 will work OK
> but it may not be non hygroscopic.  I think I will stick with DOT 3.
>
>
> As counterintuitive as it is, DOT 5 is not intended for use in active
> braking systems. This a silicon-based fluid meant to be used in show
> vehicles. It’s more of a preservative than actual brake fluid. If you were
> to try and use this in a street vehicle, you’d end up with no brakes pretty
> soon.
> DOT 5.1
>
> Despite having that 5 in its name, DOT 5.1 is a whole different beast than
> DOT 5. DOT 5.1
> <https://www.eeuroparts.com/Parts/71260/Brake-Fluid-DOT-5-1-500ml-100951/>
> is
> a glycol-borate based fluid that has a high dry boiling point of 270C/500F.
> DOT 5.1 is backward compatible with DOT 4 and DOT 3. In fact, it’s the new
> standard for most vehicles.
>
> On Mon, May 13, 2024 at 12:51 PM Gary Forsmo <gbforsmo at gmail.com> wrote:
>
> > William -
> >
> > DOT 5 is Hydrophobic ... meaning it does *NOT* absorb moisture from the
> > air.  Less moisture = less rust.
> >
> > People who are diligent enough to flush & refill the hydraulic brake
> fluid
> > with DOT 3 may never face moisture-induced rust in their master or wheel
> > cylinders.
> >
> > I used DOT 3 in my original. one-owner, stock, 1969 1600cc engine
> > Squareback  car for 40+ years.  But I decided to flush the system
> > *thoroughly* and replaced the brake fluid with DOT 5 about 10 years ago.
> > Just because of the moisture absorption possibility.
> >
> > On Mon, May 13, 2024, 2:28 PM William Hoyer <wjhoyer at gmail.com> wrote:
> >
> > > why do you use DOT 5 instead of DOT 3?
> > >
> > >  I have been using DOT 3 for over 50 years and it has worked just fine.
> > > Flush the system every 2-3 years.  As I recall, DOT 4 is not
> recommended.
> > >
> > > On Mon, May 13, 2024 at 11:48 AM Jim Adney <jadney at vwtype3.org> wrote:
> > >
> > > > On 13 May 2024 at 11:50, Gary Forsmo wrote:
> > > >
> > > > > The liquid quantities & prices for DOT 5 seem to be all over the
> map.
> > > The
> > > > > lowest is $6.42 for 11oz. The highest is $124.95 for 1 gallon.
> > > >
> > > > The 11 oz bottle would be fine for you, if you only need topping up
> > > > quantities. If you pull the master, that might still be enough,
> > depending
> > > > on
> > > > where the leak is.
> > > >
> > > > > Searching for GE or Dow Chemical, as a manufacturer of DOT 5, seems
> > to
> > > be
> > > > > elusive.  But I'm not the most capable  "researcher", either.
> > > >
> > > > I'm not sure how one might confirm that fact. It was something I
> > learned
> > > > over
> > > > the years of researching DoT-5.
> > > >
> > > > --
> > > > *******************************
> > > > Jim Adney, jadney at vwtype3.org
> > > > Madison, Wisconsin, USA
> > > > *******************************
> > > >
> > > > _______________________________________________
> > > > VWType3.Org mailing list - type3 at vwtype3.org
> > > > To unsubscribe or change subscription options, visit:
> > > > http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
> > > > If you need more help, contact: gregm at vwtype3.org
> > > >
> > > -------------- next part --------------
> > > An HTML attachment was scrubbed...
> > > URL: <
> > >
> >
> http://lists.vwtype3.org/pipermail/type3-vwtype3.org/attachments/20240513/39c53374/attachment.htm
> > > >
> > > _______________________________________________
> > > VWType3.Org mailing list - type3 at vwtype3.org
> > > To unsubscribe or change subscription options, visit:
> > > http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
> > > If you need more help, contact: gregm at vwtype3.org
> > >
> > -------------- next part --------------
> > An HTML attachment was scrubbed...
> > URL: <
> >
> http://lists.vwtype3.org/pipermail/type3-vwtype3.org/attachments/20240513/cad39f39/attachment.htm
> > >
> > _______________________________________________
> > VWType3.Org mailing list - type3 at vwtype3.org
> > To unsubscribe or change subscription options, visit:
> > http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
> > If you need more help, contact: gregm at vwtype3.org
> >
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://lists.vwtype3.org/pipermail/type3-vwtype3.org/attachments/20240513/5f9f49f5/attachment.htm
> >
> _______________________________________________
> VWType3.Org mailing list - type3 at vwtype3.org
> To unsubscribe or change subscription options, visit:
> http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
> If you need more help, contact: gregm at vwtype3.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.vwtype3.org/pipermail/type3-vwtype3.org/attachments/20240513/d00276f0/attachment.htm>