I've got two (minor) comments :
1) The DOT 3/4 rating is not as important as whether the fluid is made
by Girling. Girling DOT 3 (no longer available ?) will not 'eat'
natural rubber seals, but Wagner DOT 4 will. BTDT, threw the entire set
of 6 month old seals away.
2) Silicone DOT 5 also will not damage natural rubber seals (or
synthetic ones for that matter). Although there are plenty of horror
stories around about how you shouldn't use DOT 5, I use it in all my
cars (and motorhome) and have never had a problem with it. It also does
not deteriorate, attract moisture or attack paint the way DOT 3/4/5.1
fluid does.
Randall
59 TR3A daily driver
Barry Schwartz wrote:
>
> >"top the reservoir with Castrol Girling Amber Brake Fluid, or a fluid
> >which conforms to specification SAE 70 R3. It is vital that no other
> >type of brake fluid is used. Use of a non-standardfluid will result in
> >brake failure caused by the perishing of the special seals in the master
> >and brake cylinders."
> ***********************************
> I've Cc'd the triumphs list as well, as this also applies -
>
> This is referring (basically) to Girling DOT 4 fluid. The seals in TR's
> (as well as almost all Girling brakes at one time) were of a natural rubber
> compound, and anything other than DOT 4 would destroy the seals in short
> order (ask anybody with an AMC, they also used Girling cylinders) Use DOT
> 4, Girling brake fluid and you won't have any trouble. Use DOT 3 at your
> own risk, if it has Original type Girling seals it WILL fail in time, if it
> has other more modern synthetic seals, then you might be ok. But why take
> a chance - Girling DOT 4 Fluid is widely available, costs not much more if
> any than DOT 3, and is a better all around fluid ([fluif], sorry I couldn't
> help it, as this is THE FLUIF that started this anyway) -
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