Sealants
I was going to make some snide comment about it doesn't HAVE to leak then I remembered my old Met is parked outside over cardboard.....

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Sealants are O.K. but they must be used in moderation , NOT globbed on as that creates little ' dingle balls ' of excess sealant that gets into places it shouldn't and can wreck your engine quickly .
GM tired the gasketless engines a while back , they were fine for 40,000 miles or so then leaked worse than pre war Harleys

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Making your one water outlet gasket is easy and confidence building too ~ use some old thin cardboard like an oil filter box , cereal box or whatever , use a ball peen hammer , expect to toss out the first couple .
Smear the thinnest coating of sealant you can on both sides and button 'er up .
I bought some cool red silicone gaskets from a place in Tenn. that makes them for all manner of engines , I plan to glue those suckers into place with The Right Stuff on BOTH SIDES as I re seal the engine then run it hard a few years and it begins to dribble again , pi$$ing me off badly .
Adding a good PCV system also slows down if not halts oil leaks .