did you really just ask about oiling brakes? i thought i imagines it!
m
December 2011
don't oil anywhere near the pads or brake disc.sounds like the brake pads have worn down,the grinding noise isn't a good sign.try to refrain from riding until brake pads are replaced as damaging /scoring to the brake disc is eminent.if your son has been riding the bike for a while with this problem you will have to replace the brake disc as it will be scored.brake pads cost around £8.00 disc £25 plus.
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Try fixfault.com to fix motorcycles.