[Healeys] Which Brake Fluid?

[Bob Spidell]

Delphi == Lockheed

On 7/24/2021 5:36 PM, Perry Small via Healeys wrote:
> Have had DOT 3/4 in our BN2 for over 20 years this time around. Seems 
> like the only issue I have had is replacing the rear wheel cylinders 
> seal twice in that time. During regular inspections have found a very 
> small leak on one side or the other and replaced seals on both sides. 
> Front brakes and master seem to hold up better.
> P
>
> Sent from my iPhone
>
>> On Jul 24, 2021, at 7:59 PM, Michael MacLean via Healeys 
>> <healeys at autox.team.net> wrote:
>>
>> 
>> Well apparently DOT 3/4 is ahead in the poll.  I have used it 
>> exclusively in the Bugeye for over 20 years with no problems.  I was 
>> only asking to see if there was some advantage to using the silicone 
>> over synthetic because the BN2 has a completely new brake system 
>> which has never seen any type of fluid yet.  This would be the time 
>> to make that decision.  I  made all the brake lines, flares and used 
>> the original fittings when I restored the Bugeye and there were no 
>> leaks when I filled it.  I feel reasonably sure there won't be much 
>> of a problem with the BN2 in this respect.  So, I am leaning towards 
>> DOT 3/4.  As an interesting aside, the local parts supplier here in 
>> San Bernardino that has been selling British car parts and supplies 
>> recommended Delphi brake fluid.  The low moisture Castrol we were 
>> getting in the past no longer is made.  Today's Castrol brake fluid 
>> is made in India according to the shop owner.  The Delphi brake fluid 
>> is supposedly superior. What do I know, but I bought it.
>>
>> On Sat, Jul 24, 2021 at 3:15 PM richard mayor via Healeys 
>> <healeys at autox.team.net <mailto:healeys at autox.team.net>> wrote:
>>
>>     The military uses silicone because some military vehicles sit for
>>     long periods of time when not in use..... waiting for that day
>>     when they need to spring into action.   Silicone fluid is not the
>>     best performance wise but because it does not accumulate moisture
>>     over time, it is best for military vehicles that sit unused for
>>     long periods of time.
>>
>>     FWIW, I was in the military and I use DOT 3
>>
>>
>>     On Sat, Jul 24, 2021 at 6:19 AM Michael Oritt via Healeys
>>     <healeys at autox.team.net <mailto:healeys at autox.team.net>> wrote:
>>
>>         "The military specifies Silicone brake fluid for a reason"
>>
>>         Not necessarily a good one.
>>
>>         Best--Michael Oritt
>>
>>         On Sat, Jul 24, 2021 at 9:04 AM warthodson--- via Healeys
>>         <healeys at autox.team.net <mailto:healeys at autox.team.net>> wrote:
>>
>>             I would like to say a few words on behalf of silicone
>>             brake fluid.
>>             It is non-hygroscopic (does not absorb moisture).
>>             It does not damage paint as do glycol fluids.
>>             A newly rebuilt and scrupulously clean brake system
>>             filled with silicone fluid should outlast a system filled
>>             with glycol fluid by several times.
>>             The military specifies Silicone brake fluid for a reason.
>>
>>             Gary Hodson
>>
>>
>>
>>             On July 23, 2021 at 2:05 PM, Michael MacLean via Healeys
>>             <healeys at autox.team.net <mailto:healeys at autox.team.net>>
>>             wrote:
>>
>>>             The BN2 is at the point where it is time to fill and
>>>             bleed the new brake system.  Now comes the time to
>>>             decide whether to go with DOT 3/4 brake fluid or try
>>>             silicone. Any recommendations, advice or warnings on
>>>             this decision?
>>>             Mike MacLean
>>

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