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#1113257 - 03/24/08 04:10 PM Re: AT spec. 3309 [Re: astraelraen]
MGregoir Offline


Registered: 08/30/07
Posts: 1784
Loc: Bonnyville, AB
The friction modifier in the 3309 reacts with something in Mercon V fluids is what I have hear. Destroys the clutches.

3309 is mineral based and highly friction modified, it can be used in place of Dexron-III but not the other way around, Aisin transmissions are picky.

Chrysler transmissions, especially from the ATF+3 and A604 issues onward, are also very particular about what they will and won't work with.

I would not doubt Mobil making it for everyone, although when I looked, Ford says their fluid was made in Canada. Castrol has a big blending plant in Toronto, and Ford does a lot of business with BP, so I was thinking that, or maybe Petro-Canada who makes all of GM's factory fill transmission fluids for Dexron VI now. Does anyone know where the Mobil 3309 is made? Esso sells it in Canada as Esso 3309, so it could possibly be made here, as well.

Anyways, with so much 3309 spec'd fluid out there across the parts counter or from a Mobil distributor, I would just use the right stuff and not worry. How often do you actually work on your transmission or how much money do you have to put into it for it to be a really big deal? Transmissions aren't cheap and considering how little maitenence they take to keep reliable, might as well use the specified stuff and forget about it.

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#1113286 - 03/24/08 05:07 PM Re: AT spec. 3309 [Re: MGregoir]
NHHEMI Offline


Registered: 07/06/07
Posts: 5514
Loc: NH
The issue is 3309/T-IV is not that great of a fluid to start out with. If you can run a synthetic that will work why not do it?
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#1113292 - 03/24/08 05:15 PM Re: AT spec. 3309 [Re: astraelraen]
Tones Offline


Registered: 11/28/03
Posts: 898
Loc: Houston, TX
astraelraen You may already know, but multivehicle does not equal Dexron/Mercon

Multivehicle will work for Dex/Merc applications, but a specification that calls for 3309 fluid will not work with Dex/Merc fluid as you mention. Don't know the specifics, but I would not use a multivehicle fluid just because it says multivehicle. I would look for the 3309 support before using it in my 3309 application.
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#1113706 - 03/25/08 09:02 AM Re: AT spec. 3309 [Re: NHHEMI]
astraelraen Offline


Registered: 03/02/08
Posts: 167
Loc: ID, US
 Originally Posted By: NHSilverado
The issue is 3309/T-IV is not that great of a fluid to start out with. If you can run a synthetic that will work why not do it?


This is my question exactly.

The only reason that I can find is that Aisin trannys are picky, and I don't want to have to rebuild my 5000 mile brand new tranny in <50k.

The reason I speculate Mobil makes all the 3309 is that no other manufacturer makes it specifically. Even Castrol has a blend that says it will work for 3309 vehicles. But it isn't specifically branded 3309, or TI-V, or whatever.

I would simply like to find a synthetic source of 3309, but I don't see that happening. From a price point, 3309 is pretty expensive for a base mineral/dino oil pack. Maybe the friction modifiers, etc that are specific to the 3309 spec don't work with synthetic oils?


Edited by astraelraen (03/25/08 09:04 AM)

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#1113901 - 03/25/08 01:16 PM Re: AT spec. 3309 [Re: astraelraen]
NHHEMI Offline


Registered: 07/06/07
Posts: 5514
Loc: NH
If a multi spec fluid mfg lists T-IV( or whatever spec you want to use )on their bottle chances are it has been fully tested to meet those requirements and will work in the application without problems. In our letigious society I doubt they would say it is okay to use their product in a tranny calling for T-IV if it would cause a problem. I just don't see them not covering themselves before making such a claim?

T-IV has been out for a LONG time and thus there most certainly are countless thousands of folks who have run multi-spec fluids without issue. There is even a guy in this thread who has run Royal Purple MaxATF which is multi-spec in his Aisin tranny with no problems. I honestly do not see any issues with it( myself anyway although I am not a fluid expert ).

I am pretty picky about making sure I use the right thing in my vehicle however. I am not an advocate of OEM fluids per say though. I think they are over priced and of mediocre quality at best as a rule. Give me a premium aftermarket fluid that meets/exceeds the OE requirements and I go that route. I will run RP MaxATF in my GM Aisin AF33 tranny calling for T-IV( 3309 ). I forsee no mechanical issues nor any type of incompatibility issues whatsoever.


Edited by NHSilverado (03/25/08 01:21 PM)
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#1115212 - 03/26/08 11:09 PM Re: AT spec. 3309 [Re: NHHEMI]
SamSnyder Offline


Registered: 12/24/06
Posts: 17
Loc: San Fernando Valley
Here's a good cross-reference list for the stuff. It's used in Ford Fusion V6 six-speeds and the cousin Mazda6, both of which use the AW trans. My research suggests that its all ExxonMobile-sourced 3309 from ExxonMobile Canada. The stuff was readily available at my Ford dealer. I understand that substitutes are not recommended based on the friction materials used in the AW transmissions.

http://www.mazda6tech.com/tsb/aisinwarner.pdf

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#1115418 - 03/27/08 08:33 AM Re: AT spec. 3309 [Re: SamSnyder]
Johnny Offline


Registered: 05/27/02
Posts: 14013
Loc: Retired | Wausau, WI
Thanks SamSnyder. A memo straight from the mfg. I would say these are the products to use.

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#1115469 - 03/27/08 09:38 AM Re: AT spec. 3309 [Re: Johnny]
NHHEMI Offline


Registered: 07/06/07
Posts: 5514
Loc: NH
 Originally Posted By: Johnny
Thanks SamSnyder. A memo straight from the mfg. I would say these are the products to use.


Yes they are the ones to use but aftermarket fluids that list the spec such as T-IV are fine.
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#1115480 - 03/27/08 10:00 AM Re: AT spec. 3309 [Re: NHHEMI]
Eddie Offline


Registered: 12/07/03
Posts: 7139
Loc: Florida, Cape Coral
Thank you SamSnyder. Always good to have important information in oficial print. Ed Hayes
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