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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > Technical Discussion and Customizing your H2

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  #1  
Old 02-11-2008, 10:44 PM
Humdingah Humdingah is offline
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Default Re: GM: No Dexron VI ATF in Transfer Case

What's a warranty???
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  #2  
Old 02-12-2008, 01:30 AM
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Default Re: GM: No Dexron VI ATF in Transfer Case

so, I've got mobile 1 syn. in my TC, are you saying go back to Dex III? Seem's silly.
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Old 02-12-2008, 04:28 AM
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Default Re: GM: No Dexron VI ATF in Transfer Case

That's for you to decide. Since 2006 there has been no "official" Dexron III ATF produced.

This is the kind of crap that can happen when ATF is used in other applications. When the fluid is reformulated for better performance in automatic transmissions, a problem develops in manual transmissions and transfer cases!
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Old 02-13-2008, 01:34 AM
MONSTERMATT MONSTERMATT is offline
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Default Re: GM: No Dexron VI ATF in Transfer Case

OK, so u sayin i should drain amsoil out the t-case and the royal purple out the pan?? i noticed with the royal purple that my tranny ran a little cooler as soon as i went with it, when i put in the purp i brought it all to the dealer and they did it for me and never said a word, thats funny!
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Old 02-28-2009, 03:29 AM
Luv2Camp Luv2Camp is offline
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Default Re: GM: No Dexron VI ATF in Transfer Case

SO now I am really confused. Went to my local Hummer dealer today to purchase the manual gear oil listed in the tsb for my 06 H2 and was told by both the parts and service areas that they are using DEX6 in the transfer case as the DEX3 is no longer made. When I told them that GM was advising to use the manual gear oil the parts manager went in the back and came back a few min later and told me he called GM and they said that they confirmed I should use the DEX6 in the transfer case.

Not sure what I should do now!
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Old 02-28-2009, 07:21 PM
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Default Re: GM: No Dexron VI ATF in Transfer Case

+1 for redline .
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Old 02-28-2009, 08:34 PM
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Default Re: GM: No Dexron VI ATF in Transfer Case

Dont take any chances! Put Redline High Temp ATF in the TC, as it meets DexIII specifications. Please note that it used to have the DexIII spec on it, but they had to remove it per GMs request: http://www.racerpartswholesale.com/p...ansmission_Oil


Put Redline D6 (which is spec'd for DexVI) in the tranny
http://www.racerpartswholesale.com/p...ansmission_Oil

Last time I checked, Redline had the only Full Synthetic ATF that fully met the GM DexVI specification! There may be others out now, but I am not sure. Don't listen to the BX AMSoil marketing that says there's meets this spec - it is close but does not fully meet it!
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