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Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
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Old Jan 6, 2009 | 05:19 PM
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Which one for a 4L60E

Can't believe I can't find it in the FAQ and search is down
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Old Jan 6, 2009 | 05:48 PM
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Dexron III.
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Old Jan 6, 2009 | 07:37 PM
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Originally Posted by joecar
Dexron III.
Thanks
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Old Jan 6, 2009 | 08:32 PM
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Dex VI will work also.
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Old Jan 6, 2009 | 10:52 PM
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and dex vi is twice as good... ok, bad joke.
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Old Jan 6, 2009 | 11:22 PM
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Originally Posted by tptransmission
Dex VI will work also.
IV is four.
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Old Jan 7, 2009 | 12:09 AM
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Originally Posted by the_merv
IV is four.
I don't think they made a Dexron 4. They went from 3 to 6.
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Old Jan 7, 2009 | 12:49 AM
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I thought it was Dexron 4, never heard of 6, seriously..lol
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Old Jan 7, 2009 | 01:38 AM
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Originally Posted by the_merv
I thought it was Dexron 4, never heard of 6, seriously..lol
Dexron for some reason went from III to VI
There is also an ATF+4 but it's not Dexron.

I forgot the reason for no IV
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Old Jan 7, 2009 | 02:23 AM
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That's what I'm thinking of probably, the +4 stuff.
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Old Jan 7, 2009 | 10:19 AM
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i just stick with DEX III
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Old Jan 7, 2009 | 10:48 AM
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This will go in my next trans oil drop (or may wait till I toast the stock tranny and get a built one). It's costly though.

Allison Transmission TranSynd
http://www.allisontransmission.com/c...Aug2001/88.jsp
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Old Jan 7, 2009 | 11:08 AM
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Originally Posted by Chrome355z
This will go in my next trans oil drop (or may wait till I toast the stock tranny and get a built one). It's costly though.

Allison Transmission TranSynd
http://www.allisontransmission.com/c...Aug2001/88.jsp
Heres the 2009 version.
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Old Jan 7, 2009 | 11:24 AM
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Allison is now using Dex VI. Dexron VI was development specifically for the GM 6 speed.
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Old Jan 7, 2009 | 11:49 AM
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Originally Posted by tptransmission
Allison is now using Dex VI. Dexron VI was development specifically for the GM 6 speed.
Be careful there, only the Allison 1000 series was designed in a codeal with GM Powertrain so they ended up having to use GMs specs for oil and shipped with DexVI iirc. GM can mfg and call it an Allison as long as they don't make a design change.

Allison Transmission uses TranSynd in the Medium/Heavy Duty Transmissions that they manufacture to this day. DexVI would VOID the warranty on these transmissions, and circa I believe 2006 it would cause physical problems due to seal compatibility issues.

I'll be at Allison in the next month or two to talk to their oil guy, i'll se what more info I can find out!!!
Last edited by Chrome355z; Jan 7, 2009 at 11:56 AM.
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Old Jan 7, 2009 | 12:22 PM
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TranSynd is a better fluid if you want to pay for it. I was Just pointing out that some Allisons did go to Dex 6.
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