I've used DOT 5 in the HDVA conversion but can't remember if it's the McLeod
or Quarter Master system. Also have the Apple calipers and M/C with DOT 5.
Both were started from new with DOT 5. No problems after two years.
My original McLeod leaked after a few years with DOT 3. Go figure.
I found a Dept of Defense Tech bulletin that called for converting all new
vehicles from DOT 3 to 5 when the vehicles were received. The bulletin called
for a flush with DOT 5 for the change over. Don't have the link but recall it
was through a vintage military vehicle website.
I'm re building my car now and will convert when I put it back together. My
paint had taken quite a beating from DOT 3 over the years. I'll keep you
posted.
John
71TR6
> From: 75tr6@tr6.danielsonfamily.org
> To: forzion@maine.rr.com; 6pack@autox.team.net
> Date: Mon, 5 Jul 2010 15:19:56 -0400
> Subject: Re: [6pack] brake master reservoir
>
> My HDVA 5 speed conversion comes with a hydraulic T/O bearing and the
> manufacturer, Quarter Master, states that using DOT5 will void the warranty.
> Previous to using the Quarter Master T/O bearing, HDVA supplied one from
> McLeod which had the same requirement. All I can come up with is that the
> T/O bearing seal doesn't play nice with DOT5. Maybe Apple has seen the same
> problem.
>
> Other then the paint eating issue, there's nothing wrong with
> DOT3................all modern cars with ABS brakes still use it.
>
> Bob
>
> Bob Danielson
> 1975 TR6 CF38503U
> Running w/ Throttle Body Injection,
> Toyota 5 speed & Nissan LSD
> http://tr6.danielsonfamily.org
>
> --------------------------------------------------
> From: "David Friedlander" <forzion@maine.rr.com>
> Sent: Monday, July 05, 2010 8:59 AM
> To: <6pack@autox.team.net>
> Subject: Re: [6pack] brake master reservoir
>
> > Colin;
> >
> > I've been running DOT 5 for several years now. NO issues! No paint
> > issues, either.
> > Before making the switch from DOT 3, my PDWA leaked onto the frame and
> > adjoining
> > area. By the time I discovered the problem, I had a mess to clean up
> > and to repaint!
> > Flushing the system of DOT 3 is straightforward and seems to provide me
> > a firmer
> > pedal, even at summertime temperatures.
> >
> > Not sure why Apply Hydraulics would be so adamant for you to stay with
> > DOT 3 but,
> > if you ask them, I'd bet the list would be interested to hear their
> > reasoning....
> >
> > Cheers!
> >
> > Dave Friedlander
> > '74 Six w/A-OD and TBI
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>
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