C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Correct Fluid for 2008 C6 M6 trans?

Thread Tools
 
Search this Thread
 
Old Feb 18, 2025 | 01:43 PM
  #1  
jwd's Avatar
jwd
Thread Starter
Instructor
15 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Apr 2008
Posts: 154
Likes: 2
From: FL
Default Correct Fluid for 2008 C6 M6 trans?

So, I'm getting some confusing info from the dealer re: the current fluid being used for the C6 M6 trans fills/flushes?

Was going to pick up 5qts for my Z51 to do a flush this weekend, and was told that the Dextron III GM 88861800 has been replaced by GM 19540137 , a *75-90 manual/transfer case fluid* ????

What?

Was hoping to do this work this coming weekend, but, I'm at a loss. This can't possibly be the right fluid, can it?

I've found one thread here discussing aftermarket fluids, but really didn't find any consensus on what would be the best for my daily driven and regularly autocrossed C6...

Any autocrossers/time trial competitors / track night people in C6s have any thoughts/recommendations?

Thanks all

#funwithcars
Reply
Old Feb 18, 2025 | 02:17 PM
  #2  
Dano523's Avatar
Dano523
Race Director
10 Year Member
Community Builder
Community Influencer
Top Answer: 1
 
Joined: Dec 2013
Posts: 12,502
Likes: 3,631
Default

Your looking for Dexron III/Mecon atf fluid
If you can not find the GM branded, then this is the same fluid.
https://www.autozone.com/motor-oil-a...0?cmpid=OSA:US

And no, the LS diff fluid

GM/AC Delco Dexron Ls Gear Oil (75W90) Quadrasteer Fluid

is not the same fluid that is used in the diff, that is used in the trans as well.
If you need another source for that fluid that is not GM, not hard to find as well under the mobil 1 branding.
Reply




All times are GMT -4. The time now is 02:37 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE