You could run a vacuum pump. Its bolt on.
A lot harder for a engine to leak with negative pressure in the crankcase.
My last engine, no leaks. Well sort of. I had a leak from a valve cover due to those inexpensive top bolt fabricated valve covers. They have a lip that holds oil on the bottom rail.
Cured it with a little Permatex #2 along that bottom rail.
All my engines have leaked a little until now with the V pump.
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