$$$ For DCT Fluid Addition
Thread Starter
Safety Car
Joined: Jun 2002
Posts: 4,760
Likes: 2,511
From: Buckeye, AZ
St. Jude Donor '12-'13
$$$ For DCT Fluid Addition
When asking our local dealer the price for adding the (2) qts fluid, they told us it is now included. Is GM conceding the 2 qts is now required, like on MY 2024? A few mos ago they told me it was $250. Either way, I am adding it based on MY 2024 requirement. I figure, it can't hurt.
Last edited by gliot1; Dec 7, 2023 at 05:04 PM.
Popular Reply
Dec 7, 2023, 09:41 AM
Melting Slicks
Joined: Aug 2017
Posts: 2,195
Likes: 2,207
From: Massachusetts
The MY2024 has a modified DCT case that does NOT require adding 2 quarts of fluid, even for track use.
Pro
Joined: Sep 2005
Posts: 673
Likes: 854
From: DFW
When asking our local dealer the price for adding the (2) qts fluid, they told us it is now included. Is GM conceding the 2 qts is now required, like on MY 2024? Y mos ago they told me it was $250. Either way, I am adding it based on MY 2024 requirement. I figure, it can't hurt.
You need a different dealer that knows what he's talking about. Your current one appears to be an idiot... The two (2) additional liters HAVE NEVER BEEN INCLUDED from the factory (including 2024's).
Race Director
Joined: Feb 2011
Posts: 14,741
Likes: 5,605
From: AZ
The 2024's and some late 2023s have a modified internal system that not only does not require the extra 2 quarts. you SHOULD NOT ADD EXTRA DCT fluid, track use or not.
The dealer would bill a customer for the extra fluid by charging the Chevy "book" method for the extra, which requires disassembly of the trunk, removal of the air cheaner to get access to the plug on the top of the DCT case. The easy way to do it is to just jack up the proper side of the car , remove the fill plug and pour in the extra 2 quarts, then replace the plug. Much less time and effort. Since you should not add the extra fluid on the 2024, this process should not matter to you.
The dealer would bill a customer for the extra fluid by charging the Chevy "book" method for the extra, which requires disassembly of the trunk, removal of the air cheaner to get access to the plug on the top of the DCT case. The easy way to do it is to just jack up the proper side of the car , remove the fill plug and pour in the extra 2 quarts, then replace the plug. Much less time and effort. Since you should not add the extra fluid on the 2024, this process should not matter to you.
Pro
Joined: Sep 2005
Posts: 673
Likes: 854
From: DFW
OMG, the OP's original statement from the dealer indicates that the dealer is incorrect. @gliot1 said that the dealer told him that the 2 additional quarts (it's actually liters!) are INCLUDED in the 2024's. This part of the statement is WRONG, the 2 additional liters are not necessary, regardless of tracking the car or not, due to a redesign of the DCT pan, NOT that any additional fluid has been added to the fill from the factory. Accurate facts matter, and in this case both @LucaBrasiAZ and the dealer are wrong. This is why Social Media is such a poor method of distributing information, there is (are) FAR to many false statements being perpetuated as FACTS when in reality, they are FALSE.
Race Director
Joined: Mar 2007
Posts: 11,425
Likes: 8,576
OMG, the OP's original statement from the dealer indicates that the dealer is incorrect. @gliot1 said that the dealer told him that the 2 additional quarts (it's actually liters!) are INCLUDED in the 2024's. This part of the statement is WRONG, the 2 additional liters are not necessary, regardless of tracking the car or not, due to a redesign of the DCT pan, NOT that any additional fluid has been added to the fill from the factory. Accurate facts matter, and in this case both @LucaBrasiAZ and the dealer are wrong. This is why Social Media is such a poor method of distributing information, there is (are) FAR to many false statements being perpetuated as FACTS when in reality, they are FALSE.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Race Director
Joined: Sep 2016
Posts: 13,180
Likes: 10,528
But since the OP doesn't have a 2024, he needs to determine the build date to see if he has the new DCT case or the old one.
Race Director
Joined: Mar 2007
Posts: 11,425
Likes: 8,576
When asking our local dealer the price for adding the (2) qts fluid, they told us it is now included. Is GM conceding the 2 qts is now required, like on MY 2024? Y mos ago they told me it was $250. Either way, I am adding it based on MY 2024 requirement. I figure, it can't hurt.
However, the (incorrect) premise of the OPs question was that 2024 transmission were actually delivered with 2 extra liters of fluid, and it sounded like he may have been asking if that implies that all prior model years should now have the 2 extra liters added for all uses, not limited to track use. That of course is a big NO, because the premise was not correct in first place.
Administrator
Joined: Mar 2001
Posts: 368,414
Likes: 24,800
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Actually IMO the OP does not state he has a 2024 car. The MY in his post refers to model year, not that he is talking about his particular car. The OP can clarify that though.
Race Director
Joined: Apr 2005
Posts: 10,179
Likes: 2,306
From: Wesley Chapel, FL Las Vegas, NV
From the OP's other post his car built MAY 2023. probably not the MY2024 DCT
Last edited by Vega$Vette; Dec 7, 2023 at 04:03 PM.
Thread Starter
Safety Car
Joined: Jun 2002
Posts: 4,760
Likes: 2,511
From: Buckeye, AZ
St. Jude Donor '12-'13
It was my understanding that the MY2024 has the new case AND 2 more litres of fluid from the factory. My understanding is the new case has baffles to prevent sloshing of the fluid. It made some sense then, that the additional fluid might be recommended by GM. The dealer I use is a very large dealer that services many Corvettes and has multiple trained techs, and they seem to be seasoned with C8 maintenance. I am adding the 2 litres no matter what, but if they provide free even better.
I think like most posts, a lot of folks didnt understand what I was asking.
I think like most posts, a lot of folks didnt understand what I was asking.
Race Director
Joined: Aug 2016
Posts: 12,812
Likes: 10,229
From: Garden Valley CA
All indications are that the 2024 (and late 2023) DCTs don't have 2 quarts of additional fluid. GM just fixed the issue of fluid starvation in certain track conditions.
If you want to be sure ask your dealer to look up the DCT fluid capacity for a 2020-2022 and 2024. They should be very close if the case design is the only change but the 2024 should have about 2 additional quarts capacity if GM also increased the fluid capacity.
GM specifically says not to add the 2 additional quarts to 2024 DCTs although it probably wouldn't do anything worse than it does to the earlier DCTs if you did (other than potentially voiding your warranty). I'd definitely find out which DCT your 2023 has.
There has been at least one case where GM has blamed a problem on adding the 2 additional quarts. There was a car that was doing competitive high speed runs and the computer was pulling power. GM blamed this on the additional fluid causing problems with a temperature sensor.
If you want to be sure ask your dealer to look up the DCT fluid capacity for a 2020-2022 and 2024. They should be very close if the case design is the only change but the 2024 should have about 2 additional quarts capacity if GM also increased the fluid capacity.
GM specifically says not to add the 2 additional quarts to 2024 DCTs although it probably wouldn't do anything worse than it does to the earlier DCTs if you did (other than potentially voiding your warranty). I'd definitely find out which DCT your 2023 has.
There has been at least one case where GM has blamed a problem on adding the 2 additional quarts. There was a car that was doing competitive high speed runs and the computer was pulling power. GM blamed this on the additional fluid causing problems with a temperature sensor.
Race Director
Joined: Sep 2016
Posts: 13,180
Likes: 10,528
It was my understanding that the MY2024 has the new case AND 2 more litres of fluid from the factory. My understanding is the new case has baffles to prevent sloshing of the fluid. It made some sense then, that the additional fluid might be recommended by GM. The dealer I use is a very large dealer that services many Corvettes and has multiple trained techs, and they seem to be seasoned with C8 maintenance. I am adding the 2 litres no matter what, but if they provide free even better.
I think like most posts, a lot of folks didnt understand what I was asking.
I think like most posts, a lot of folks didnt understand what I was asking.
We understood what you were asking. And we understood your dealer is giving you incorrect information.
It's still not clear from your post what year car YOU have, and if it's a 2023 when it was built.
Le Mans Master
Joined: Jul 2007
Posts: 5,503
Likes: 1,819
From: Arkansas
St. Jude Donor '09 thru '17,'22 thru '26
Read this before you add extra DCT fluid.
https://www.corvetteforum.com/forums...-engineer.html
https://www.corvetteforum.com/forums...-engineer.html
Race Director
Joined: Feb 2011
Posts: 14,741
Likes: 5,605
From: AZ