Rear End Pressure

[Geo.T]

I am very happy to see this thread. I installed a Volvo OD a few years back and have had a continued problem of oil being pushed out into the torque tube.
Re post #9:
1. The right side is passenger side?
2. What is "differential poppet vent?
3. What size plastic tubing?
4. Does the system vent only air (vapors) or some oil also?
I finally see some hope of resolving my long-term problem.
Thank you in advance.
George