Yet another VA series oil / lube question.

Searched and read through all the threads I could find in here regarding VA oil types / capacities etc, etc. Good stuff, I'm just lookin' to clarify things a little bit more for I'm a rookie at this.

I just got a 1943 VAI. Has a rear PTO, no hydraulic lift. So I'm assuming there's no hydraulic pump/filter in the torque tube as well?

What I don't quite understand yet is the torque tube separated from the rear end? Meaning is there a separate drain and fill plug for the rear/PTO gear housing or is it all one continuous chamber that is filled from the square plug near the engine? If that's the case then is there only one drain? The one under the torque tube near the foot pedals? Any tips and tricks to draining / refilling?

Also from my research here that leads me to thinking regular 80/90W gear oil is what I should use, right? I live in MA, if that matters.

Motor oil was used in the torque tube on tractors with the live pump and 90w was used in the torque tube on the high pressure system. The high pressure pump uses motor oil in a separate reservoir which is part of the pump assembly on the left side of the torque tube. More info on the link.

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