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How much fluid in a Mn12

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Old Jul 23, 2005 | 06:08 PM
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Default How much fluid in a Mn12

I checked out the owners manual, but could not find out how much fluid it takes to fill a Mn 12? I'm doing a full fill for the first time.

Thanks for any info.

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Old Jul 23, 2005 | 08:49 PM
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4.1 quarts of DEXRON® - lll for a first-time dry-fill. Less on subsequent changes.
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Old Jul 23, 2005 | 10:07 PM
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You will only be able to drain and fill 3,75 QTs. If you are going to change it, I recommend stepping up to Mobil ! Synthetic ATF!! Wow what a difference it made in my 98 Coupr and 02 Z06!!

Its a good and highly recommended MOD!

Bill C
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Old Jul 24, 2005 | 04:02 AM
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Agree with Bill. 3.75 quarts is about all you'll be able to get in until it starts draining out the fill plug.

As an alternative to the Mobil 1, this is what I use in my Z06 on the track (and it is a DEXRON III fluid):

AMSOIL ATF

Some like this will come in handy:
AMSOIL Hand Pump


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Old Jul 24, 2005 | 07:05 PM
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I like Redline myself.. Either way, go synthetic.

Last edited by Dan_the_C5_Man; Jul 25, 2005 at 03:26 PM.
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Old Jul 24, 2005 | 09:07 PM
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mine took less than 4qts. also I used a carpenters level on top of the roof when I had the car on flat concrete (gas station). Then I knew when the car was level on the jack stands.
you may want to remove the fill plug first, you would hate to drain all the fluid only to find out you can not get the fill plug off.
how do you plan on getting the new fluid back in?
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Old Jul 25, 2005 | 08:12 AM
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Originally Posted by Dan_the_C5_Man
I like Red Line myself.. Either way, go synthetic.
Hey Carl. When my Vette was at Northstar to fix a leaky tranny seal, they recommended Redline synthetic as replacement fluid for both tranny and rearend.
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Old Jul 26, 2005 | 08:42 PM
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Thanks for all the input. I purchased 5 quarts of Redline Synthetic equivalent of Dextron 3. I hope this is ok for a fill. The tranny was a rebuilt Mn12 so it's completely dry inside.

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