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 Post subject: Hydro fluid
PostPosted: Sat Feb 17, 2018 2:36 am 
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Joined: Sun Jul 13, 2008 8:26 pm
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Location: Coffs Harbour
Hi guys. I managed to find a 20 litre drum full of this fluid. Does anybody know much about it or used it. Is it good, bad, or the ducks nuts....Image

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 Post subject: Re: Hydro fluid
PostPosted: Sat Feb 17, 2018 10:31 am 
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Joined: Sat Feb 09, 2013 5:44 pm
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Location: Camden
Yes. That is good. I have been using it for a long time. I would suspect it is commonly sold and used in Australia. I bought from the factory at the address on the tin. The owner told me his father worked for H.C. Sleigh who originally made it for BMC Aust. and this was as close as possible to the original formula.


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 Post subject: Re: Hydro fluid
PostPosted: Sat Feb 17, 2018 12:21 pm 
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Location: Coffs Harbour
Bill B wrote:
Yes. That is good. I have been using it for a long time. I would suspect it is commonly sold and used in Australia. I bought from the factory at the address on the tin. The owner told me his father worked for H.C. Sleigh who originally made it for BMC Aust. and this was as close as possible to the original formula.
Well that is good news. Thankyou.

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 Post subject: Re: Hydro fluid
PostPosted: Sat Feb 17, 2018 12:36 pm 
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Joined: Mon Jul 07, 2014 12:36 pm
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Location: Bentleigh, Melbourne
Specially formulated? Wow, must really hard to make a batch of 50/50 IPA (isopropyl alcohol) and water! Pretty sure its IPA, I'm a petroleum chemist and used it loads of times, has a distinctive smell. Can probably buy 20L drums of the stuff really cheap, it's a bog standard industrial solvent...

Edit: I stand corrected. The stuff is apparently 49% alcohol, 49% water, the remainder being a "lubricant" and corrosion inhibitor.

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 Post subject: Re: Hydro fluid
PostPosted: Sat Feb 17, 2018 1:02 pm 
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Joined: Wed Sep 30, 2015 9:38 am
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Location: Brandy Hill, NSW
They still sell it, I bought some last month.


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 Post subject: Re: Hydro fluid
PostPosted: Sat Feb 17, 2018 2:21 pm 
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Location: Wodonga - Vic/NSW border
they sell it at autobarn, repco and supercheap too, it's called 'antifreeze'

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 Post subject: Re: Hydro fluid
PostPosted: Sat Feb 17, 2018 4:52 pm 
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Location: Sunshine Coast, QLD
deluxe67 wrote:
Specially formulated? Wow, must really hard to make a batch of 50/50 IPA (isopropyl alcohol) and water! Pretty sure its IPA, I'm a petroleum chemist and used it loads of times, has a distinctive smell. Can probably buy 20L drums of the stuff really cheap, it's a bog standard industrial solvent...

Edit: I stand corrected. The stuff is apparently 49% alcohol, 49% water, the remainder being a "lubricant" and corrosion inhibitor.

Methanol is what i use when making a brew

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 Post subject: Re: Hydro fluid
PostPosted: Sat Feb 17, 2018 6:50 pm 
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Location: Cowra
cooperess wrote:
They still sell it, I bought some last month.


What does 20L Cost?

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 Post subject: Re: Hydro fluid
PostPosted: Sun Feb 18, 2018 11:02 am 
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Location: Camden
Some information about various versions of hydrolastic fluid on sale. Tony Cripps is a member of the BMC-Leyland Heritage Group.

http://www.amvcnsw.com.au/austin1800/WS ... 0fluid.pdf


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 Post subject: Re: Hydro fluid
PostPosted: Sun Feb 18, 2018 3:50 pm 
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Location: Melbourne, VIC
Bill B wrote:
Some information about various versions of hydrolastic fluid on sale. Tony Cripps is a member of the BMC-Leyland Heritage Group.

http://www.amvcnsw.com.au/austin1800/WS ... 0fluid.pdf

He left out MKO as a local supplier - https://minikingdomonline.com.au/produc ... l-formula/

Here's a few threads about hydro fluid. In the first one I posted some of the BMC documentation mentioned by Tony Cripps.

http://www.ausmini.com/forums/viewtopic.php?f=2&t=88452

http://www.ausmini.com/forums/viewtopic.php?f=2&t=96145

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 Post subject: Re: Hydro fluid
PostPosted: Sun Feb 18, 2018 4:26 pm 
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They use alcohol as it forms an azeotrope with water and prevents corrosion. :P


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 Post subject: Re: Hydro fluid
PostPosted: Mon Feb 19, 2018 6:50 am 
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 38462
Location: near Baulkham Hills, NSW
I have used ethylene glycol/deionised water 50:50. Commonly used in USA.

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 Post subject: Re: Hydro fluid
PostPosted: Mon Feb 19, 2018 12:59 pm 
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Joined: Mon Jul 07, 2014 12:36 pm
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Location: Bentleigh, Melbourne
That'd do it Doc I reckon. The corrosion inhibitor in the coolant will do the trick...
Out of curiosity, what volume of the stuff is required?
Note: If you really got stuck you could just use water as a temporary solution. It's a fluid therefore non compressible, probably change the suspension characteristics somewhat however?

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67 Deluxe
Dry suspension
1293cc, 11:1 comp, RE 282 camshaft, 45 Weber, extractors etc
4 synchro close ratio gbox
Cooper S brakes, no booster
Stealth box, as Doc says "goes harder and idles!"
RH tank cos I needed it crossing the Nullarbor etc..


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 Post subject: Re: Hydro fluid
PostPosted: Mon Feb 19, 2018 1:50 pm 
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Location: near Baulkham Hills, NSW
I think Simon K uses straight glycol concentrate as it's a bit thicker and damps better.
I reckon a litre each side, mix 4L up and you will have half it left after pump up, let down fast, and pump up again.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank @7000+, 45 Dellorto, RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. Going harder with Stealth Black Box in.:mrgreen:


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 Post subject: Re: Hydro fluid
PostPosted: Mon Feb 19, 2018 2:54 pm 
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998cc
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Joined: Mon Jul 07, 2014 12:36 pm
Posts: 550
Location: Bentleigh, Melbourne
Is that all? Only a couple of litres?!
I wonder how viscosity sensitive the system is? Seems not much, there'd be a fair difference in viscosity between an alcohol/ water brew and straight ethylene glycol I imagine. (could try and look it up, surely there is a viscosity spec somewhere). I imagine the key to whatever you use is having a corrosion inhibitor...

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67 Deluxe
Dry suspension
1293cc, 11:1 comp, RE 282 camshaft, 45 Weber, extractors etc
4 synchro close ratio gbox
Cooper S brakes, no booster
Stealth box, as Doc says "goes harder and idles!"
RH tank cos I needed it crossing the Nullarbor etc..


Top
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