Both of my MOVEs leaked at the distributor of which is sealed by a common neoprene O-ring. They dependably deteriorate every 20 years, similar to how all rubber bits deteriorate. If the vehicle is garage-stored, the longevity of chassis rubber and tyres will increase.
As far as both crankshaft seals are concerned, an old used car salesman trick was to add brake fluid to the engine oil. Brake fluid will swell the hardened rubber . One has to be carefull, however, not to pour in too much of it, given that these engines only hold ca. 2 liters of oil. If you add a higher percentage, then it would be best to let the oil/brake fluid combinaton circulate without applying the load of driving the vehicle.
As previously mentioned, the oil pan is glued onto the block with silicone. You could perform this, without needing to remove the engine. Here, resealing explained in detail: Butchered replacement MOVEs diary - Projects builds and rides - Live To Dai
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