M6 fluid - Pontiac GTO Forum
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post #1 of 8 (permalink) Old 07-16-2015, 08:38 AM Thread Starter
 
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M6 fluid

Have you guys changed your M6 Fluid and if so what decent fluid did you replace it with?
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post #2 of 8 (permalink) Old 07-16-2015, 08:42 AM
 
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GM # 88861800 Manual Trans Fluid

Larry

2005 GTO Quick - 1984 Honda V65 Magna Quicker - 2004 Z06 Quickest
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post #3 of 8 (permalink) Old 07-16-2015, 08:44 AM
 
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I had all of the fluids changed at the dealership right after I bought it. They used GM Dexron III.

2005 Pontaic GTO - CGM 6 Speed (My car)
2017 Chevrolet Colorado 2WT (My daily driver)
2010 Mercedes Benz C300 Sedan (Wife's car)
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post #4 of 8 (permalink) Old 07-16-2015, 09:03 AM
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Originally Posted by AlaGreyGoat View Post
GM # 88861800 Manual Trans Fluid

Larry
Definitely what he said. It has the right properties to allow the syncros to work properly.

2004 Blk/Rd M6
6.3 litre LS1

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post #5 of 8 (permalink) Old 07-16-2015, 11:45 AM Thread Starter
 
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Dextron III

Dextron is a given, but who makes a decent one with a additives. My stick seems to growl in every gear. I can bump the shifter up a bit and it stops the noise, not sure what is causing that.
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post #6 of 8 (permalink) Old 07-16-2015, 12:41 PM
 
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I'll defer to svede to answer that one but, in my case, the fluid was changed by the dealership 6 years ago and they used Dexron III (no 't') and I have had no problems with noise, etc.

2005 Pontaic GTO - CGM 6 Speed (My car)
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post #7 of 8 (permalink) Old 07-16-2015, 04:46 PM
 
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I used dex6 in mine
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post #8 of 8 (permalink) Old 07-16-2015, 05:15 PM
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I used dex6 in mine
You should NOT use Dex VI. It is NOT backward compatible with Dex III. You should also NOT use synthetic.


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2004 Blk/Rd M6
6.3 litre LS1

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