• Won't work I think ... you either need to destroy it .. caustic soda will destory aluminum (there are horror stories of people losing whole motorbikes because they tried cleaning it to make it shiny with it and not having a motorbike when they have returned) ... it won't touch steel .. so it should just burn it out.

    .. or get some proper torque on it .. i.e. basically saw into those cups and them get something in there and turn with sheer brute force... and use a king dick spanner.

    I am pretty sure my father can pull those out with his bare fingers.

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