C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Changing fluid in MN6

Thread Tools
 
Search this Thread
 
Old Jul 24, 2006 | 07:39 PM
  #1  
vetteman9368's Avatar
vetteman9368
Thread Starter
Team Owner
15 Year Member
 
Joined: Dec 2000
Posts: 27,897
Likes: 9
From: I have no tolerence for liberals and fools, but sometimes i repeat myself
CI 3-5-7-8-9 Veteran
St. Jude Donor '08
Default Changing fluid in MN6

where is the drain plug? how much fluid does it hold
Reply
Old Jul 24, 2006 | 08:01 PM
  #2  
SPS's Avatar
SPS
Instructor
10 Year Member
 
Joined: Jul 2001
Posts: 133
Likes: 2
From: Winsdor ON
Default

The drain is on the passenger side of the transmission, down low, and a few inches behind the fill plug. My tranny sometimes didn't want to go into first or second, but after replacing the fluid with Mobil 1, it shifts much better. I think the manual had the capacity listed as "capacity -5 quarts ---overhaul " but I only was able to replace about 3 quarts. You will need a pump to get the fluid into the fill hole.


Steve
Reply
Old Jul 24, 2006 | 08:27 PM
  #3  
Tact's Avatar
Tact
Former Law Dawg Moderator
Supporting Lifetime Gold
20 Year Member
St. Jude 20 Year Donor
Liked
Top Answer: 1
 
Joined: Jan 2005
Posts: 29,434
Likes: 96
From: Eads, Tennessee
CF St. Jude Co-Organizer
St. Jude Donor '05 thru '24
Default

I changed mine recently and it took a little over 3.5 quarts. I used Amsoil synthetic ATF.
Reply
Old Jul 25, 2006 | 01:58 AM
  #4  
C66 Racing's Avatar
C66 Racing
Premium Supporting Vendor
20 Year Member
Conversation Starter
All Eyes On Me
Top Answer: 1
 
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
Default

Originally Posted by vetteman9368
where is the drain plug? how much fluid does it hold
Drain plug is on the bottom, rear passenger side corner. Fill plug is about halfway up and forward on the driver's side where the tranny temp probe plugs in. Capacity is 3.7 quarts.
__________________


C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)





Reply
Old Jul 25, 2006 | 08:48 AM
  #5  
Silver98's Avatar
Silver98
Burning Brakes
10 Year Member
 
Joined: Nov 2004
Posts: 993
Likes: 0
From: PA
Default

To properly change the fluid in the MN6, it should be flushed. This will take about 12 quarts... and the proper flush machine. If you live near a dealer you can TRUST, let them do it. It will be a much better job than a drain and re-fill at home.
Reply
Old Jul 25, 2006 | 09:32 AM
  #6  
vetteman9368's Avatar
vetteman9368
Thread Starter
Team Owner
15 Year Member
 
Joined: Dec 2000
Posts: 27,897
Likes: 9
From: I have no tolerence for liberals and fools, but sometimes i repeat myself
CI 3-5-7-8-9 Veteran
St. Jude Donor '08
Default

Originally Posted by Silver98
To properly change the fluid in the MN6, it should be flushed. This will take about 12 quarts... and the proper flush machine. If you live near a dealer you can TRUST, let them do it. It will be a much better job than a drain and re-fill at home.
there is no such thing as a dealer i can trust, and I don't pay people to work on my cars unless ABSOLUTELY necissary
Reply
Old Jul 25, 2006 | 09:35 AM
  #7  
Nyvetteguy007's Avatar
Nyvetteguy007
Melting Slicks
Supporting Gold
15 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2006
Posts: 2,936
Likes: 260
From: Westchester County New York
Default

Originally Posted by Tact
I changed mine recently and it took a little over 3.5 quarts. I used Amsoil synthetic ATF.
Dont forget the anti slip additive.
Reply
Old Jul 25, 2006 | 10:04 AM
  #8  
Tact's Avatar
Tact
Former Law Dawg Moderator
Supporting Lifetime Gold
20 Year Member
St. Jude 20 Year Donor
Liked
Top Answer: 1
 
Joined: Jan 2005
Posts: 29,434
Likes: 96
From: Eads, Tennessee
CF St. Jude Co-Organizer
St. Jude Donor '05 thru '24
Default

Originally Posted by bkazepis
Dont forget the anti slip additive.
Amsoil already has it added. No need to add.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-1

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-2

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-3

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old Jul 25, 2006 | 01:57 PM
  #9  
todd@rpmtransmissions's Avatar
0todd@rpmtransmissions
Former Vendor
 
Joined: Dec 2005
Posts: 418
Likes: 5
From: Anderson Indiana
Default

You don't want to put any additive in the transmission.
Reply
Old Jul 25, 2006 | 04:19 PM
  #10  
willyfastz's Avatar
willyfastz
Pro
10 Year Member
 
Joined: Oct 2005
Posts: 733
Likes: 0
From: Vanceboro NC
Default

Originally Posted by todd@rpmtransmissions
You don't want to put any additive in the transmission.
I was going to say the say thing, but figured it was just a smart comment.
Reply
Old Jul 25, 2006 | 04:40 PM
  #11  
Milkman2's Avatar
Milkman2
Instructor
10 Year Member
 
Joined: Aug 2004
Posts: 151
Likes: 0
From: San Diego California
St. Jude Donor '06-'07
Default

Originally Posted by Silver98
To properly change the fluid in the MN6, it should be flushed. This will take about 12 quarts... and the proper flush machine. If you live near a dealer you can TRUST, let them do it. It will be a much better job than a drain and re-fill at home.

I was told you can not FLUSH a Manual Transmission you only flush autos.. is this incorrect? And if someone said they are flushing your manual transmission with a machine there are full of ..

Expert pls.. advice.
Reply
Old Jul 25, 2006 | 05:16 PM
  #12  
Stealthy4's Avatar
Stealthy4
Burning Brakes
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Mar 2005
Posts: 1,227
Likes: 15
St. Jude Donor '06
Default

97 service manual says:

MN6 capacity is 3.75 quarts

It says the A4 requires 12 quarts for a flush.

You dont flush a MN6..you simply remove the drain plug and let it drain. You refill until it flows out of the fill hole...should be about 3.5 quarts...

Of course you have to be level for it to properly drain...
Reply
Old Jul 25, 2006 | 05:50 PM
  #13  
Tact's Avatar
Tact
Former Law Dawg Moderator
Supporting Lifetime Gold
20 Year Member
St. Jude 20 Year Donor
Liked
Top Answer: 1
 
Joined: Jan 2005
Posts: 29,434
Likes: 96
From: Eads, Tennessee
CF St. Jude Co-Organizer
St. Jude Donor '05 thru '24
Default

Originally Posted by Stealthy4
97 service manual says:

MN6 capacity is 3.75 quarts

It says the A4 requires 12 quarts for a flush.

You dont flush a MN6..you simply remove the drain plug and let it drain. You refill until it flows out of the fill hole...should be about 3.5 quarts...

Of course you have to be level for it to properly drain...

For a manual tranny you'll only be able to get a little over 3.5 quarts drained and refill. The above member who stated 12 quarts is wrong regarding MN6. He must have the MN6 and autos confused.
Reply
Old Jul 25, 2006 | 09:18 PM
  #14  
Nyvetteguy007's Avatar
Nyvetteguy007
Melting Slicks
Supporting Gold
15 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2006
Posts: 2,936
Likes: 260
From: Westchester County New York
Default

Originally Posted by bkazepis
Dont forget the anti slip additive.
OOOPS too tired that night.........i was thinking of the rear....
Reply
Old Jul 25, 2006 | 09:40 PM
  #15  
Tact's Avatar
Tact
Former Law Dawg Moderator
Supporting Lifetime Gold
20 Year Member
St. Jude 20 Year Donor
Liked
Top Answer: 1
 
Joined: Jan 2005
Posts: 29,434
Likes: 96
From: Eads, Tennessee
CF St. Jude Co-Organizer
St. Jude Donor '05 thru '24
Default

I thought that's what you were talking about above. Again, Amsoil has the additive in it. It's called Amsoil Severe Gear.
Reply
Old Jul 26, 2006 | 12:30 AM
  #16  
C66 Racing's Avatar
C66 Racing
Premium Supporting Vendor
20 Year Member
Conversation Starter
All Eyes On Me
Top Answer: 1
 
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
Default

Originally Posted by Silver98
To properly change the fluid in the MN6, it should be flushed. This will take about 12 quarts... and the proper flush machine.
The MN6 is the manual six speed gearbox in the C5 Corvette (M12 is the designation for the C5 Z06). Both only take 3.7 quarts of automatic transmission fluid labed to meet GM Dexron III specifications. No flush is required on a C5 manual gearbox.

Since it was mentioned, the differential takes 1.7 quarts of synthetic 75w90 gear lube with 4 oz of friction modifier. As a note, many differential fluids come with the friction modifier in them and adding extra is not normally needed.

The two applicable AMSOIL products:
Manual and Automatic Transmission on C5s: AMSOIL ATF
Differential Fluid on C5s: AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (comes with friction modifier in it)
Reply
Old Jul 26, 2006 | 09:02 AM
  #17  
Silver98's Avatar
Silver98
Burning Brakes
10 Year Member
 
Joined: Nov 2004
Posts: 993
Likes: 0
From: PA
Default

Thanks, I stand corrected.
Reply

Get notified of new replies

To Changing fluid in MN6

Old Sep 6, 2006 | 11:35 PM
  #18  
Outsider's Avatar
Outsider
Burning Brakes
 
Joined: Jul 2004
Posts: 773
Likes: 0
From: Normal IL
Default

what about draining the rearend ? where are the drain plugs and fill plugs?
Reply
Old Sep 19, 2006 | 12:40 PM
  #19  
Ikester's Avatar
Ikester
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Mar 2001
Posts: 11,405
Likes: 26
From: Whippany NJ
CI 6-7-8-9 Veteran
St. Jude Donor '08-'09
NCM Sinkhole Donor
Default

Originally Posted by Subdriver
Differential Fluid on C5s: AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (comes with friction modifier in it)
Thats what I put in my rear diff after my 4.10s break in. I didnt add any additive and its still quiet.
Reply
Old Sep 19, 2006 | 01:04 PM
  #20  
Cobra4B's Avatar
Cobra4B
Team Owner
 
Joined: Mar 2001
Posts: 25,889
Likes: 7
From: Virginia Beach
CI 3-5-6-7-8 Veteran
Default

Thank you Brad (subdriver) for stepping up and clearing up the misinfo... guys if you aren't 100% sure what you're talking about in a tech forum please don't respond, spreading mininfo is not a good thing.

I run full Amsoil fluids in my car, great stuff!
Reply



All times are GMT -4. The time now is 12:11 AM.

story-0
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-1
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-2
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-3
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
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE