Classic Mustangs List Archive

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Mail From: Matt Trostel (email redacted)

I plan on bleeding the brakes of my '66 Mustang soon. It is a 289 with the
all drum setup. What brake fluid should I use (ie DOT3, DOT4, ...)? I've
been told not to use DOT5 Silicone fluid unless I replace all the seals in
the brake system. Ford has a Heavy Duty DOT3 brake fluid that is being used
by some in autocrossing circles due to its high boiling point and it price
(it's cheap).

Thanks for the advice,
Matt

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Mail From: Scott Hollenbeck (email redacted)

At 08:30 PM 3/19/97 PST, Matt Trostel wrote:
>I plan on bleeding the brakes of my '66 Mustang soon. It is a 289 with the
>all drum setup. What brake fluid should I use (ie DOT3, DOT4, ...)? I've
>been told not to use DOT5 Silicone fluid unless I replace all the seals in
>the brake system. Ford has a Heavy Duty DOT3 brake fluid that is being used
>by some in autocrossing circles due to its high boiling point and it price
>(it's cheap).

You shouldn't use the DOT5 silicone fluid unless you completely drain
the system, and remove all traces of the earlier fluid. DOT5 silicone
fluids aren't compatible with the earlier DOT3 and DOT4 fluids.

DOT3 fluid is perfectly OK, but you should plan on flushing it out every
year or two. It's hydroscopic (it absorbs water), and you don't want
water rusting your brake system from the inside out.

----->
Scott A. Hollenbeck (mailtoemail redacted))
1970 R Code Mach 1

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Mail From: Sam Belinoski (email redacted)

Matt Trostel wrote:
>
> I plan on bleeding the brakes of my '66 Mustang soon. It is a 289 with the
> all drum setup. What brake fluid should I use (ie DOT3, DOT4, ...)? I've
> been told not to use DOT5 Silicone fluid unless I replace all the seals in
> the brake system. Ford has a Heavy Duty DOT3 brake fluid that is being used
> by some in autocrossing circles due to its high boiling point and it price
> (it's cheap).
>
> Thanks for the advice,
> Matt

I was always told to use the DOT3. It is more closely related to the
original brake fluid that was used, and is better suited for the older
style rubber seals and brake hoses.


'66 Convertible
Tahoe Turquoise

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Mail From: Rob (email redacted)

Matt Trostel wrote:
>
> I plan on bleeding the brakes of my '66 Mustang soon. It is a 289 with the
> all drum setup. What brake fluid should I use (ie DOT3, DOT4, ...)? I've
> been told not to use DOT5 Silicone fluid unless I replace all the seals in
> the brake system. Ford has a Heavy Duty DOT3 brake fluid that is being used
> by some in autocrossing circles due to its high boiling point and it price
> (it's cheap).
>
> Thanks for the advice,
> Matt
DOT3 is used for your car.

Cheers, Rob

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Mail From: Ty Gitts (email redacted)

this is a test




> From (email redacted) Fri Mar 21 08:55 PST 1997
> Date: Fri, 21 Mar 1997 12:50:01 -0400
> Originator: (email redacted)
> From: Rob <(email redacted)>
> To: Multiple recipients of list <(email redacted)>
> Subject: [CM:2253] Re: What brake fluid for '66 Mustang?
> X-Listprocessor-Version: 6.0 -- ListProcessor by Anastasios Kotsikonas
> Mime-Version: 1.0
>
> Matt Trostel wrote:
> >
> > I plan on bleeding the brakes of my '66 Mustang soon. It is a 289 with the
> > all drum setup. What brake fluid should I use (ie DOT3, DOT4, ...)? I've
> > been told not to use DOT5 Silicone fluid unless I replace all the seals in
> > the brake system. Ford has a Heavy Duty DOT3 brake fluid that is being used
> > by some in autocrossing circles due to its high boiling point and it price
> > (it's cheap).
> >
> > Thanks for the advice,
> > Matt
> DOT3 is used for your car.
>
> Cheers, Rob