To be clear, you don't mean the normal, blue can of Wd40 do you, but the silver one that costs more, or either?
Either, just a warning that the normal WD won't do much imo
Try freezer for a day or two or maybe boiling water to try and get a little expansion/contraction to break the bolt and surround bond.
@lynx started
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To be clear, you don't mean the normal, blue can of Wd40 do you, but the silver one that costs more, or either?