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[Closed] Bleeding shimano brakes top down help?

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[#1490779]

Can i mix mineral oil?

Im doing it top down and using halfords bike specific mineral oil but i will have to mix the oil.

Will this be ok or should i bleed the old oil out completely.

I can't do it bottom up.


 
Posted : 08/04/2010 7:34 pm
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It'll be fine.

Why can't you do it bottom up?

I usually run it through until it has all been swapped and the colour is close to the new stuff anyway as new fluid is cheap and better.


 
Posted : 08/04/2010 8:03 pm
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i have mixed them in the past no problems

why can't you bleed it from the calliper?


 
Posted : 08/04/2010 8:04 pm
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can't do it bottom up because i don't have a syringe.


 
Posted : 08/04/2010 8:06 pm
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can't do it bottom up because i don't have a syringe.

fair enough, i personally find i get a better bleed doing it bottom up. You can get syringes from ebay, couple of quid for 5 decent sized ones


 
Posted : 08/04/2010 8:09 pm
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i had one and lost it like a muppet. I did it bottom up last time and it went really well.

At this rate im tempted to just let the LBS do it.

I might leave it till the weekend and pop to JE James and see if they have a spare one.

Oh and i don't have the damn brake block either. it's going really well so far.


 
Posted : 08/04/2010 8:14 pm
 StuE
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I got syringe from local chemist for 50p


 
Posted : 08/04/2010 8:29 pm
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Use a piece of wood as the brake block. Bleeding top down is fine, just a bit more of a faff.

Do it


 
Posted : 08/04/2010 8:32 pm
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what stue said, local chemist. dirt ceap and exactly the same as stuff you get elsewhere.


 
Posted : 08/04/2010 8:37 pm
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tried chemist they didn't have any. Je James gave me one free last time. i'll try the piece of wood cheers.


 
Posted : 08/04/2010 8:40 pm