Try to rejuvenate the existing seal with a bit of aerospace 303 - it might help to spring back over compressed rubber - and importantly I find when cleaning something properly the chances of actually finding damage increases

(If I could get away with it I'd like to wash a car at least twice before buying it - that way I'd actually be able to see the wood for the trees so to speak and have a better idea of what I'm about to get!)

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!