I'm having exact same issue i believe.... 427 SO with tunnel wedge and it continues to leak
oil out of the breather filter. Not a huge amount but enough to make a mess on valve covers. ( i love to drive but not much of a mechanic) Is that an issue with the way the engine is setup or just normal? my
oil pressure runs 65-70psi and it runs through
oil cooler. can someone put a link or names of the fix? thanks for any help....Keith