Transmission flush
Safety Car
Joined: Dec 2006
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From: NC
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Researched here and looks like you need to look at the transmission date If built after Feb 2019 then it should have the latest fluid. No flush necessary.
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
When in doubt, flush it. I couldn't find out if mine had been done or not. There was no shuddering but why bother? Flush it. I developed a habit for used cars. It flows, it goes. I have no confidence in what you put in or how good it is. Why keep it? The old fluid is more hygroscopic than the new. The old transmissions, for whatever their reasons, PROBABLY didn't let as much air in perhaps or the moisture laden fluid wasn't as critical for the old transmission. Besides, they probably worked the kinks out of it.
Melting Slicks
Joined: Feb 2018
Posts: 2,184
Likes: 1,049
From: North Texas
Flush is the wrong word, you need to do an exchange of fluid.
Flushing refers to a high pressure exchange machine procedure and they can dislodge particles / debris that you don't want left inside your transmission.
Flushing refers to a high pressure exchange machine procedure and they can dislodge particles / debris that you don't want left inside your transmission.
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
For a transmission that hasn't ever been maintained for 200K, it might be an issue. But if you regularly clean the thing, should it have debris?
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Pro
Joined: Apr 2006
Posts: 737
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From: Edwardsville IL
I downloaded an introduction to the 8L90 pdf off this site looking for a filter - but didn't find it. So do all the A8 (in my case the 2017 model) have filters? I was surprised I didn't see on referenced - but there sure isn't much room for one..Thanks in advance!
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
24274402 for my 16 Stingray according to the parts person
