There plenty of cheap, bike brake specific mineral oils around so I wouldn't bother fucking about with anything else. If not Shimano then finishline or whatever else will at least be similar in viscosity and with additives for protecting seals and working at the right temperatures.
There plenty of cheap, bike brake specific mineral oils around so I wouldn't bother fucking about with anything else. If not Shimano then finishline or whatever else will at least be similar in viscosity and with additives for protecting seals and working at the right temperatures.