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Brakes again!
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Millie Vanillie



Joined: 18 Mar 2009
Posts: 21
Location: Chichester, West Sussex

PostPosted: Sun Mar 29, 2009 10:14 am    Post subject: Brakes again! Reply with quote

Now I have got the oil sorted.....

What 'dot' brake fluid should I use do you think ??

Halfords only stock a minimum of dot 4 and I wasn't sure if this would be ok for the very antiquated brakes on my A30 ?

They did say the Austin probably would have had Dot 2 or even 3 originally - but can I still buy that anywhere ???
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Rick
Site Admin


Joined: 27 Apr 2005
Posts: 21219
Location: North-west UK

PostPosted: Sun Mar 29, 2009 10:35 am    Post subject: Reply with quote

Chances are you have mineral brake fluid in the A30s brake system, as that is what it would have had when new. New cars have synthetic, but unless your car has had brand new brakes, cylinders etc fitted, and an upgrade to synthetic fluid, its more likely you have the traditional stuff. So long as what you're looking at in the shop is mineral, it should be ok.

Rick
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Various 1920s-1960s - Austin, Morris, Commer, Dodge etc.
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Millie Vanillie



Joined: 18 Mar 2009
Posts: 21
Location: Chichester, West Sussex

PostPosted: Mon Mar 30, 2009 3:14 pm    Post subject: Reply with quote

Hello Rick !

I have been looking for some mineral brake fluid as you suggested, but there isn't any locally and online it seems that the 'mineral based stuff' is targetted at mountain bikes with disc brakes ...... will that be ok ??

Seems like there's always something new to discover about this car Rolling Eyes
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ukdave2002



Joined: 23 Nov 2007
Posts: 3526
Location: South Cheshire

PostPosted: Mon Mar 30, 2009 3:28 pm    Post subject: Reply with quote

Dot 4 is fine it can be used to replace dot 2/3 or to top it up, it has a slightly higher boiling point than the earlier stuff.

Dave
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Millie Vanillie



Joined: 18 Mar 2009
Posts: 21
Location: Chichester, West Sussex

PostPosted: Mon Mar 30, 2009 3:39 pm    Post subject: Reply with quote

All the dot 4 fluid I have found seems to be synthetic though and I wasn't sure it would be ok ...... the brakes are bad enough without me putting the wrong fluid in them !!!!
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ukdave2002



Joined: 23 Nov 2007
Posts: 3526
Location: South Cheshire

PostPosted: Tue Mar 31, 2009 8:26 am    Post subject: Reply with quote

I wouldn't put stuff the silicon stuff in with seals that have had dot 3.

If its glycol based (as is dot 3) it will be fine, the stuff I have in my garage is dot 4 glycol, bought a couple of months ago.

Dave
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Millie Vanillie



Joined: 18 Mar 2009
Posts: 21
Location: Chichester, West Sussex

PostPosted: Tue Mar 31, 2009 3:27 pm    Post subject: Reply with quote

Thanks Dave,

I have bought some Comma dot 4 today and will give it a go - fingers crossed !
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Nic Jarman



Joined: 05 Oct 2008
Posts: 1035
Location: Stoke by Clare, Suffolk

PostPosted: Tue Mar 31, 2009 11:22 pm    Post subject: Reply with quote

Is that really your taste in music? Oh and I use DOT 4 in all my old cars.
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