A8 trans fluid capacity
Thread Starter
3rd Gear
Joined: Aug 2024
Posts: 3
Likes: 0
From: So Utah
A8 trans fluid capacity
With the 4 quarts trans fluid capacity , anyone know if adding an additive of an addional 24oz would actually over fill the trans? Wanting to try the Lucas no slip to see if I can get crisper shifting. Its been triple flushed and software updated (its a 2016)
Drifting
Joined: Nov 2005
Posts: 1,924
Likes: 275
also yes, if you add 24 oz fluid your trans would be WAY over full. There is a simple procedure to making sure you have the proper fluid level.
Last edited by badass1g; Aug 23, 2024 at 06:10 PM.
Drifting
Joined: Nov 2005
Posts: 1,924
Likes: 275
What you could do is buy a red fluid transfer pump from harbor freight. Pop off the rubber fill plug on top of the trans and suck out apprx 24 oz. Then use the same pump to pump in 24 oz of your Lucas product. Should be pretty simple task. The pump is $8 and works amazing! Comes with the proper hoses too.
Drifting
Joined: Jul 2006
Posts: 1,490
Likes: 257
From: Lake Tapps WA.
What you could do is buy a red fluid transfer pump from harbor freight. Pop off the rubber fill plug on top of the trans and suck out apprx 24 oz. Then use the same pump to pump in 24 oz of your Lucas product. Should be pretty simple task. The pump is $8 and works amazing! Comes with the proper hoses too.
Last edited by C5FORFUN2; Sep 29, 2024 at 02:41 PM.
Le Mans Master
Joined: Oct 2014
Posts: 8,673
Likes: 2,728
From: Atlanta GA
Le Mans Master
Joined: Oct 2014
Posts: 8,673
Likes: 2,728
From: Atlanta GA
Adding Lucas to an to any newer automatic will not give you crisper shifts , and overfilling the trans by that much is not recommended at all
Shift speed and engagement is now governed by the TCM programing , that's why it shifts smooth when driving normal and snaps your neck when you are into the gas .
What to change how it shifts , have the TCM "tuned" . But dont expect the snap that one would get when u installed a new valve body in the old Turbo 400's and 350's
The A8 and other newer transmissions cut fuel and spark during a shift for just a micro second , this is how these transmission "live behind 600 to heavily modified 900 hp motors but the result is a smoother feeling shift which is a byproduct of this type of shift control
If it's not broken , I don't recommend trying to fix it ....
Dave
Shift speed and engagement is now governed by the TCM programing , that's why it shifts smooth when driving normal and snaps your neck when you are into the gas .
What to change how it shifts , have the TCM "tuned" . But dont expect the snap that one would get when u installed a new valve body in the old Turbo 400's and 350's
The A8 and other newer transmissions cut fuel and spark during a shift for just a micro second , this is how these transmission "live behind 600 to heavily modified 900 hp motors but the result is a smoother feeling shift which is a byproduct of this type of shift control
If it's not broken , I don't recommend trying to fix it ....
Dave
Melting Slicks
Joined: Feb 2018
Posts: 2,184
Likes: 1,050
From: North Texas
Change portions of the ATF fluid from the recommended Mobil1 Blue label is not recommended.
Mixing different fluids that have different chemical make ups are just asking for trouble.
Never found a mechanic in a can, except Techron for the fuel tank sensor.
Stick with 100% Mobil1 Blue ATF is your best route to go. .
Mixing different fluids that have different chemical make ups are just asking for trouble.
Never found a mechanic in a can, except Techron for the fuel tank sensor.
Stick with 100% Mobil1 Blue ATF is your best route to go. .
Last edited by Tinkertech; Aug 26, 2024 at 09:16 AM.
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Le Mans Master
Joined: May 1999
Posts: 6,519
Likes: 1,305
From: Windermere FL
Having done the triple flush myself, there is definitely a filler tube on the pass side towards the rear of the tranny, above the pan of course. There are a couple threads here with pictures.
Adding 24 ounces will overfill it. But no snake oils needed, except as noted below.
Best way is to use a pump to measure what you drain out out of the filler hole so you can then refill with the exact amount. Otherwise, it is rather a PITA to check the fluid level. You have to get the car perfectly level, after getting the transmission to operating temperature, and remove another plug to test the fill level. And you will burn off your hands getting up there with the tranny hot.
Only reason to add snake oil is if you have done the triple flush already and still have the shudder. Usually, that means your torque converter is gone. Some on this forum used Lubegard and had success reviving the torque converter and getting rid of the shutter. Otherwise, there is no reason to add any snake oil.
Adding 24 ounces will overfill it. But no snake oils needed, except as noted below.
Best way is to use a pump to measure what you drain out out of the filler hole so you can then refill with the exact amount. Otherwise, it is rather a PITA to check the fluid level. You have to get the car perfectly level, after getting the transmission to operating temperature, and remove another plug to test the fill level. And you will burn off your hands getting up there with the tranny hot.
Only reason to add snake oil is if you have done the triple flush already and still have the shudder. Usually, that means your torque converter is gone. Some on this forum used Lubegard and had success reviving the torque converter and getting rid of the shutter. Otherwise, there is no reason to add any snake oil.
😀
