Classic cars forum & vehicle restoration.
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Miken
Joined: 24 Dec 2012 Posts: 544
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Posted: Fri Sep 03, 2021 8:22 pm Post subject: Brake fluid |
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I would appreciate some opinions on brake fluid.
I have to do a job on the brake system of my car shortly.
I am trying to ascertain if it is at present, filled with either silicone or traditional mineral fluid.
The master cylinder reservoir is a steel cylinder like a bean can mounted on the bulkhead.
Looking into it I can see the fluid is clean and clear but with a bluish tint.
Drawing some off with a syringe I squirted it into a small jar containing water and gave it a shake to mix it all together.
After a few minutes it separated and I observed a thin layer of the blue fluid floating on the top of the water.
I prepared some paint samples. Enamel primer, enamel gloss and some cellulose primer. I dropped a bit of the fluid onto them to see what effect it had. It appears to have no effect.
I rubbed the fluid into the paint a bit with my finger. no effect.
Question . What have i got here? (Ill be honest. Im pretty sure I know the answer here. but go on and tell me).
Thank you
Mike |
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alanb
Joined: 10 Sep 2012 Posts: 516 Location: Berkshire.
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Posted: Sun Sep 19, 2021 8:24 pm Post subject: |
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It sound like you have dot 5 silicone fluid, as mineral will mix with water. _________________ old tourer
Morris 8 two seater |
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Miken
Joined: 24 Dec 2012 Posts: 544
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Posted: Sun Sep 26, 2021 7:26 am Post subject: |
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Sorry, only just seen your reply. Yes that's what I thought. I have now fitted a new master cylinder and re filled with dot 5 and all appears well. |
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