[GreenKeys] Removing old labels from ASR 33

[drlegendre .]

As I understand it, DOT 3 is the 'original' propylene glycol brake fluid,
with DOT 4 being a later and superior specification, which is both mixable
and back-compatible with DOT 3. But both are PEG - propylene glycol based
working fluids.

DOT 5 is a silicone-based fluid, which is totally incompatible with the DOT
3/4 fluids, and may well be further incompatible with the seal materials
used in DOT 3/4 hydraulic systems. While DOT 5 has significant advantages
over the old glycol-based fluids, a major overhaul is normally required to
switch from DOT 3/4 to DOT 5.

On Sat, May 7, 2016 at 11:56 PM, WA5CAB--- via GreenKeys <
greenkeys at mailman.qth.net> wrote:

> There are at least three significantly different brake fluids on the
> market (just counting automotive types), DOT3, DOT4 and DOT5.  DOT3
> dissolves live (natural) rubber and is probably the one being referred to
> as dissolving weather strip adhesive.  DOT4 does not dissolve live rubber
> but does curdle some types of paint.  DOT5 is inert to rubber and paint
> (and is not hydroscopic like 3 and 4).
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
>
> In a message dated 05/07/2016 22:26:07 PM Central Daylight Time,
> dave at horsfall.org writes:
>
> On Sat, 7 May 2016, Bruce Gentry wrote:
>
> >Brake fluid also dissolves many adhesives and paints. It's out of the
> >question if the part you want to clean is painted, but if it's colored
> >plastic, try it on a hidden test spot first, giving it a day or so to
> >work.
>
> I don't know what's in brake fluid, but what I do know is that it
> certainly dissolves car duco, as I found out the hard way when I was a
> young sprog with my first car...
>
> --
> Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will
> suffer."
>
>
>
>
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