Dave F Posted August 20, 2007 Share Posted August 20, 2007 Had a problem a while back with my brake fluid turning dark a short while after changing it. The master cylinder went on me a few weeks back and I got hold of a replacement and had it fitted last week. I gave the guy 3 litres of new 5.1 fluid of which he used two litres but looking at the resevoir tonight it seems to have gone dark again. Should I be worried or do you think its just another flush is thats needed? Thanks in advance Dave Quote Link to comment Share on other sites More sharing options...
JustGav Posted August 20, 2007 Share Posted August 20, 2007 If it is dark, it usually means it is picking up water or dirt.... It should last a lot longer than that. Are the brakes spongy or anything like that. Either which way shouldn't go dark that quickly. Quote Link to comment Share on other sites More sharing options...
Dave F Posted August 20, 2007 Author Share Posted August 20, 2007 The brakes are fantastic since the new cylinder was fitted no sponginess at all. Quote Link to comment Share on other sites More sharing options...
JustGav Posted August 20, 2007 Share Posted August 20, 2007 It could also be the remains of some old fluid that used to be in the master cylinder... in which case a flush MIGHT do the trick, but keep on eye on it after that for a bit. I would still be careful, brakes are not a thing you want to go wrong. Quote Link to comment Share on other sites More sharing options...
Dave F Posted August 20, 2007 Author Share Posted August 20, 2007 Too true mate, thats why I paid someone else to do it. After the last one failed I realised how lucky I was that I was only on a quiet country road doing less than 30. Quote Link to comment Share on other sites More sharing options...
Terminator Posted August 20, 2007 Share Posted August 20, 2007 Bleeding brakes is not hard to do. If done properly all old fluid from the cylinder will have been flushed out as it is the only point at which new fluid is added. If you have had the master cylinder replaced, there would only be clean fluid introduced in the system. All your old fluid should have been flushed out. Something sounds very wrong. Quote Link to comment Share on other sites More sharing options...
Dave F Posted August 20, 2007 Author Share Posted August 20, 2007 Yeah this is my concern, surely two litres would have been enough to get rid of all the old stuff. The thing is I did'nt look last week when it was fitted to see the colour of the fluid. Quote Link to comment Share on other sites More sharing options...
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