Amsoils Torque-Drive ATF = Dextron III

[LargeCarManX2]

My Father in Law just gave me an 84 Chevy S-10 with the V/6 and 5 speed. I have been researching the fluids needed to change out the drivetrain oils.

Interesting note: The 5 speed manual transmission is filled with ATF. I was looking for synthetic ATF's and discovered that Amsoils Torque-Drive ATF meets Dexron III specs. I understand it to be more robust than standard synthetics ATF's.

Anyone use this fluid in manual transmissions and have comments?

 

[Pablo]

Dexron. Sure Amsoil ATD works fine in DEXRON and MERCON applications.

 

[Tempest]

The ATD has a worse wear scar than does the Amsoil ATF?? I'd go with the ATF (and I have in my manual transmission

).

 

[unDummy]

I'd try the torque drive. I'd wager better synchro performance then the HFM'd universal ATF.

And, I don't care for 'wear scars'. If I did, I'd recommend the Amsoil Supershift or Powershift.

If it were my manual transmission, I'd dump the ATF for Amsoil MTF, Royalpurple Synchromax, Redline MTL, BG syncroshiftII or one of the SpecialtyFormulations produtcs.

 

[LargeCarManX2]

I have heard that some transmission fluids and other fluids have been updated from time to time in OEM Service Bulletins. The little truck has 138K on it, and the transmission shifts fine, just want to service. Has anyone switched over to a syncroshift GL-4 from ATF, and if so any issues?

 

[msparks]

Quote:

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The ATD has a worse wear scar than does the Amsoil ATF?? I'd go with the ATF (and I have in my manual transmission

).

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That is becuase the product is designed to be EXACT same specs as the lower quality castrol Transyn product. Therefore Amsoil had to make a lesser quality product than the regular ATF product. If you have an allison transmission and would like a better product use ATF not ATD. If you want to have a product that is the EXACT same specs as transynd then use the Torque Drive (ATD)

 

[Whitewolf]

If the requirement is DEXRON-III then use that. However, the only proof that a fluid meets those requirements is, if it carries the GM DEXRON trademark and also on the packaging quotes the GM issued license number which allows the use of that trademark. Otherwise it is simply a non licensed fluid and in my opinion you shouldn't use non licensed fluids which are not covered by the GM licensing program.

 

[1040 WreckerMan]

I understand that using licensed products is fairly safe, however just because it's licensed does not mean it's a good product, it only means it is good enough to meet some standard. There maybe better products on the market, and with ATF's there are certainly excellent products that are not GM licensed oils that will out perform the licensed products.

I would agree unDummy, go with a MTF. A blend might also be in order to bring down the viscosity, or you could try one of the SF products that is formulated for MT's. The Redline MTL seems to preform quite well usually.

 

[Ferndog]

There are many full synthetic ATF's to choose from. And Ford has used MERCON ATF in many manual transmissions for years.

As far as the gears themselves, the wear protection in many ATF's, gear oils, engine oils and certain specialty oils can typically protect straight cut spur or helical gears. Two other factors to consider are viscosity and synchronizer materials.

The viscosity of an ATF (if you were to measure it like a motor oil) would be like a XW-20 and if you were to measure it like a gear oil it would be like a straight 70W, 75W or possibly an 80W. How does that compare to what your owner's manual requires?

Secondly, the synchronizer materials can vary from yellow metal to having special coatings. Using the wrong type of fluid may impact shift feel.

 

[Tempest]

Quote:

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That is becuase the product is designed to be EXACT same specs as the lower quality castrol Transyn product. Therefore Amsoil had to make a lesser quality product than the regular ATF product. If you have an allison transmission and would like a better product use ATF not ATD. If you want to have a product that is the EXACT same specs as transynd then use the Torque Drive (ATD)

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Interesting. Thanks for the info.

 

[Whitewolf]

What data do you have to prove the claim that the Allison product is lower quality?
Can you post that information so that we can see for ourselves?