Looks like the crankshaft pulley oil seal is leaking on my 95 E220 (M111 engine). Is this easy to change at home? I know the pulley bolt is done up very tight, what is the best way to get it off?

Thanks guys

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Mick J
'08 Chrysler 300CRD (MB OM 642 engine)
'95 E220 estate
'89 230TE (R.I.P.)