Motorcycle Questions? Ask a Mechanic.
you should use a minimum of Dot 4 but if you ride the bike hard then I'd recommend a switch to dot 5.1 which has a higher boiling point
to bleed the brakes I favour having a clear hose from the caliper bleed nipple to a jar 1/2 full of old fluid and with the nipple closed your assistant pulls the lever a few times then holds it down then you crack open the nipple and close it again whilst fluid is still flowing.I wouldn't worry about getting the brake pistons really clean, as long as there's not an excess of pad dust then the rest can be blown off with a compressed air line
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