ive seen 2 cranks marked from the crank seal cause the seal hardens up over time.. couldnt believe the difference between a new and old one.. and yes, excessive crank case pressure can force oil past the seals..
sim me bollicks.. lol heres more of it />http://www.youtube.com/watch?v=a0TFPMgKmvQ&list=PL564EB335192275AC&index=19 [media]http://www.youtube.com/watch?v=6UPRjsl-QOI