Last year, there was a discussion regarding how much oil needs to be added to an inverted G96/01 transaxle. The RS build website says 3.5L...the Evo build website says 2.7L!
Per California Motorsports (CMS):
"Oil level needs to be just below the diff center. Just up to the bottom lip of the axle seal. You can remove the axle to verify.
As per your picture, it would be the orange line above the red line. Capacity should be in the neighborhood of 5L."
THIS IS INCORRECT!
Per Ultima (Richard):
"We wouldn't recommend 5L. That is incorrect (and potentially dangerous) in our experience. Our build portal is correct for the G96.01: 3.5L Semi Synthetic GL5 EP75/90. You may get away with 5L for gentle road driving, but it's against our factory advice to be clear."
THIS IS CORRECT!
The consensus is that 3.5L measures 1.5" - 2" below the bottom of the side vent plug. In order to check this, I bought a dip stick, bent it 90 degrees at 2.5" and filed markings at 1.5", 1.75" and 2" from the bottom. Now I can check my transaxle oil level.