Correct me if I'm wrong. There is a brass plug under air box for filling. There is a Hex plug next to external filter for filling. there is a Hex plug behind drivers wheel well for filling or checking level, which is only way to check. There is a drain plug on the pan for draining.

Brass plug=14mm x 1.5
Plug next to filter 20mm x 1.5
Plug in wheel well 14mm x 1.5
Drain plug 20mm x 1.5

 

I do not know what the plug on top is made of. But its reason for being there was originally just to fill it at the factory. Its also used for the track fill.
There is drain plug on the bottom.
To my knowledge there is only one other plug we use, and that is the fill plug on the side next to the filter. Some access it by removing a wheel, but its not a different plug. That plug is the normal fill plug, and it is also for the level check. Fill it to the bottom of the fill plug when the fluid is between room temperature (68 deg F) and 104 def F.

 

I have not done this yet but if I were to drain and fill the transmission fluid, I may want to run the engine for a bit to make sure the transmission fluid has circulated through everything including the DTC filter since some would be loss taking that off. At that point the transmission would be at operating temperature, and I would take the plug back out to see if it is still filled to the bottom of the fill plug. Should the transmission fluid be at operating temperature or is it really ok to have it at the temperature you suggested? I am not sure if the fluid expands with heat so that is why I am asking are you sure about the temp and if I did it the way I was going to, would it not be full when it cooled down?

 

The information came from a service manual clip for the Transmission Fluid Level and Condition Check that someone else posted on the forum. Here is an abbreviated version that addresses your question. The fluid does expand, so if its hotter, the result will be under-filled. How much? I do not know. Also, you do not need to run the car long - just long enough to circulate fluid through the clutch circuits.

"Transmission Fluid Level and Condition Check
Fluid Level Check ProcedureWarning: The transmission fluid level must be checked when the transmission fluid temperature (TFT) is between 20–40°C (68–104°F). If the TFT is not within this range, either idle or brake torque the vehicle to raise the fluid temperature, or shut off the vehicle to allow the fluid to cool as required. Setting the fluid level with a TFT outside this range will result in either an under or over-filled transmission. TFT greater than 40°C=under-filled, TFT less than 20°C=over-filled. An under-filled transmission will cause premature component wear or damage. An over-filled transmission will cause fluid to discharge out the vent tube, possibly causing a fire that may result in serious bodily injury or severe vehicle damage, fluid foaming, or pump cavitation.

1. Start and idle the engine with the A/C turned off.
2. Run vehicle for 3 to 5 minutes while selecting drive and reverse to fill the clutch circuits. To properly fill the circuits place foot on brake, shift into drive for 30 to 45 seconds then shift into reverse for 30 to 45 seconds then repeat.
3. Stop the engine and perform the following actions within 5 minutes after stopping the engine............
4. .......Fill or drain oil until oil level is at the bottom edge of the fill opening."

 

Thanks so much! This is just what I needed!!