I believe it's the front crank seal, but I didn't get a chance to clean the engine up yet, the entire under side is covered in oil. I didn't have a hose long enough when I took it on a test drive, I'll try to grab one tomorrow to test it while driving. I don't know how it could even be building pressure at this point. I only drove it down the road maybe a mile or two and both breathers were open, I left the dipstick out of the tube and I left the oil fill cap off to vent any possible pressure that it could be building. It's not leaking from these areas either as they are dry.