Sarky B’stard
Legendary Knight
WD40 might work but it's far from the best unsticker. The well round the bolt head may be the issue if it's corroded in there or fine road grit. It's worth a can of proper penetrating oil which will have better lubricating properties.
And don't forget to give it a few sharp taps for being a naughty boy. It can break corrosion in the threads.
And don't forget to give it a few sharp taps for being a naughty boy. It can break corrosion in the threads.