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Bike disc brake question

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DFR:
all other brakes that I know less Shimano XT and Magura use dot 3/dot 4 brake fluid.

Venhill Engineering did the UK warranty work and held spares for Magura so they were selling it along side, think they used to do hose upgrades etc as well. Magura blood was just mineral oil in a fancy bottle, that marketing for you.

Not to sure on the more recent Magura range but the disc and the rim brakes are bled with a syringe, not the easiest thing to get right firtst time, a bit tempremental

thermidorthelobster:
It's Magura ROYAL Blood apparently.  Hence no doubt worth the extra they charge for it...

The PDF manual I found on their website details blowing new fluid in from the disc end, then sucking it back, and blowing it through again.  This suggests to me that in fact just using my vacuum bleeding kit would work fine;  all I have to do is keep the reservoir topped up.

Might have a bash tomorrow, but I need to check the bleed fitting first.  My guess is that the bleed nipple is actually contained in the Magura bleeding kit, rather than being integral with the brake assembly.

Looking around on the Web, various people suggest using virtually any mineral oil, or even vegetable oil, as a cheap alternative.

thermidorthelobster:
Nipped down to a better local bike shop and got the bleeding kit;  annoyingly though, I was missing the special spacer tool which apparently comes with the brakes in the first place.  Took 3 goes before I managed to find the right thickness of cardboard to use instead  :twisted:  but seems a bit better now...

Just hoping I've not got too much mineral oil sprayed around now, don't want to contaminate another set of bloomin discs!

DFR:
contaminated discs and pads are a pain in the arse, if the pads get contaminated take them out and heat them over a gas burner or cooker until the oil burns out of them, (doesnt take much) or your missus goes mad for the dodgy smell in the kitchen. Dont use car disc brake cleaner that you can by as it contains an amount of oil to stop rusting, then you'll be back at square one. Discs I usually rub down with a bit of wet and dry.
Old credit cards work well as disc spacers.

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