Question on Brake Fluid

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   Hi All

Just a quick question...

I know that brake fluid is Hydroscopic and that EVERYONE says you must always use a new sealed container...

I bought a 5 litre container not so long ago to do the brakes on my 5, but I only used about 2 litres. Based on the fact that the bottle has a sealable cap and that it was only open to the atmosphere for about 40 seconds before being re-sealed...would it still be ok?

I assume that these warnings are to protect people who do not seal the container after they use it?

Thanks

BB

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BeemaBoy Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member II Starting a Collection Joined: 25-October-2004 Location: Johannesburg, South Africa Status: Offline Points: 927	Post Options Post Reply Quote BeemaBoy Report Post Thanks(0) Quote Reply Topic: Question on Brake Fluid Posted: 23-April-2008 at 15:34
	Hi All Just a quick question... I know that brake fluid is Hydroscopic and that EVERYONE says you must always use a new sealed container... I bought a 5 litre container not so long ago to do the brakes on my 5, but I only used about 2 litres. Based on the fact that the bottle has a sealable cap and that it was only open to the atmosphere for about 40 seconds before being re-sealed...would it still be ok? I assume that these warnings are to protect people who do not seal the container after they use it? Thanks BB
	87 E30 320I 95 E34 525I Auto, Executive Package, Arctic Silver 98 E38 740I Steptronic, Silver

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The blue bullet Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member II Surfs Up! Joined: 09-April-2007 Location: Dublin Status: Offline Points: 231	Post Options Post Reply Quote The blue bullet Report Post Thanks(0) Quote Reply Posted: 23-April-2008 at 16:19
	I don't think you will have a problem if the container was sealed airtight. After all, the reservoir has a head space that contains air and this air contains water that the fluid is absorbing.

Sporty1 Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member II Joined: 18-October-2006 Location: Hertfordshire, United Kingdom Status: Offline Points: 2297	Post Options Post Reply Quote Sporty1 Report Post Thanks(0) Quote Reply Posted: 23-April-2008 at 16:53
	Should be fine BB.
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Andrew Rolland Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Go away rain Joined: 19-August-2004 Location: Scotland Status: Offline Points: 6579	Post Options Post Reply Quote Andrew Rolland Report Post Thanks(0) Quote Reply Posted: 23-April-2008 at 19:19
	Hmm I dunno. Why did you buy such a big amount? 1 litre of BMW brake fluid did my E39 and it was the cheapest stuff that I could buy. Make sure you do not use DOT 5 as this will not be compatable with DOT 4 fluid which you will have in the brake system of your 5. Andrew
	Be exclusive and drive a Petrol 5 Series! Current '13 62 F10 535i MSport Auto Previous '04 04 E60 545i SE Auto '03 53 E60 545i SE Auto (Stolen) '98 S E39 523i SE Auto