2019 triple flush
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 753
Likes: 47
From: Clearfield Utah
2019 triple flush
Does a 2019 GS require a triple trans flush or did GM have it figured out? How many miles does one seem to have when the problem starts and what to be GM?
Drifting
Joined: Jan 2014
Posts: 1,568
Likes: 594
From: Jefferson City Missouri
If your 2019 A8 was assembled after February 1st, 2019, you have the new fluid. There is no set mileage for symptoms to show up. GM issued the TSB to cover the issue but the triple flush is on your dime. Getting the triple flush done is still cheaper than replacing a torque converter or transmission.
Burning Brakes
Joined: Mar 2022
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From: Phoenix, Arizona
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Flattman - thanks for posting that pic - pretty much explains what you need to know when it comes to the requirement for a triple flush on an A8.
Team Owner
Joined: Sep 2001
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From: Athens AL
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Its a viscosity change to alleviate a problem that occurs when you drop to V4 mode cruising. If yours was made later, it was already done.
If you use a Range AFM device, you don't need it, as you should never be in V4.
If you use a Range AFM device, you don't need it, as you should never be in V4.
Melting Slicks
Joined: Feb 2018
Posts: 2,152
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From: North Texas
Actually it was a change to a non hyperscopic fluid. ie: Blue label Mobil 1.
C7 A8 trans runs cooler than other cars due to the air cooled trans ATF cooler.
Mine runs ~ 137* city driving.
The cooler temps allow moisture to build up in the fluid causing TCC shutter.
C7 A8 trans runs cooler than other cars due to the air cooled trans ATF cooler.
Mine runs ~ 137* city driving.
The cooler temps allow moisture to build up in the fluid causing TCC shutter.
Thread Starter
Burning Brakes
Joined: Jul 2007
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From: Clearfield Utah
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Racer
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From: Niagara, Ontario, Canada
New to this, I take it the Blue Mobil 1 is the fully synthetic ? Best place to buy, I've read 24 qts to do the flush.......
Team Owner
Joined: Jul 2004
Posts: 28,424
Likes: 3,276
From: Hartford WI
Who is doing the flush? If it is YOU, where you can get it cheapest. If you are getting it done at a dealership, I would get it from them. Either they will refuse to work on it or they will write on the ticket "Installed fluid supplied by customer" as a CYA if there are issues.
Burning Brakes
Joined: Sep 2010
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Team Owner
Joined: Jul 2004
Posts: 28,424
Likes: 3,276
From: Hartford WI
If your 2019 A8 was assembled after February 1st, 2019, you have the new fluid. There is no set mileage for symptoms to show up. GM issued the TSB to cover the issue but the triple flush is on your dime. Getting the triple flush done is still cheaper than replacing a torque converter or transmission.