AISIN T-IV ATF Input wanted

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im looking into substitutes for my Toyota Tacoma truck with a T-IV required ATF, my biggest issue would be to introduce a ATF that wouldn't be compatable with the OEM T-IV and start issues, so I called AISIN corporate in Torrance,CA and talked to a nice Technical guy named Clark and asked them where they sourced their ATF-0T4 (T-IV) he said they have 3 different ATF fluids for Toyota Transmissions and they all are sourced from the OEM suppliers for Toyota although he wouldn't give me the names of the sources since its all Hush hush about divulging that info, so I mentioned would Mobil be a source because I know the OEM T-IV or JWS 3309 is a Mobil product but he wouldn't come clean on it. He basically says that they ask the source for the exact? same formula to be also made for them and assured me by using their ATF im basically will be using the exact same formula as whats sold under the Toyota T_IV emblem and assured me of no issues with using thiers, he also added its the same system that Idemitsu and Beck Arneley uses to source their ATF for Japanese transmissions . Anybody have experience using the AISIN ATF T-IV in their Toyotas or input please comment.
 
I think your Toyota A/T will do fine on any name brand T-IV.....I also think it would do fine on Valvoline or Castrol Import ATFs.
I've used all of them in Toyota's and never had a problem.....Some people are running Dexron VI in their Corolla's without issue....
 
Originally Posted by pbm
I think your Toyota A/T will do fine on any name brand T-IV.....I also think it would do fine on Valvoline or Castrol Import ATFs.
I've used all of them in Toyota's and never had a problem.....Some people are running Dexron VI in their Corolla's without issue....
ive heard mixed reviews on using the Valvoline and the Castrol possibly because they are multi-vehicle types, some threads ive read says they caused slippage and erratic shifts and some people say they are a better ATF than the OEM stuff
 
I am using AISIN ATW+ on my FJ Cruiser after a full flush and it has never shifted better. AISIN is a Toyota subsidiary that makes transmission and other related components. Recently they also went big into oil manufacturing by buying some oil units in the middle east. I also use their PAO Ester full synthetic engine oil and I am pleased with the results over the previous Shell Ultra Helix.
 
Originally Posted by RoyFJ
I am using AISIN ATW+ on my FJ Cruiser after a full flush and it has never shifted better. AISIN is a Toyota subsidiary that makes transmission and other related components. Recently they also went big into oil manufacturing by buying some oil units in the middle east. I also use their PAO Ester full synthetic engine oil and I am pleased with the results over the previous Shell Ultra Helix.
I was planning on just a pan drain and refill on mine, I can get the AISIN T-IV from ROCKAUTO for less than $5 qt.
 
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It not the car manufacturer that you should be concerned with but the transmission manufacturer. AW built the unit that is in your car, GM, Saab, Volvo and other have all used the same unit. The Aisin fluid is perfect for all them regardless of the badge on the body if the OE spec is T-IV or 3309.
Avoid AM&M model fluids and full synthetics in these units. I also have a stash of Aisin for these units, its a great price.
 
Originally Posted by jrvn
Originally Posted by RoyFJ
I am using AISIN ATW+ on my FJ Cruiser after a full flush and it has never shifted better. AISIN is a Toyota subsidiary that makes transmission and other related components. Recently they also went big into oil manufacturing by buying some oil units in the middle east. I also use their PAO Ester full synthetic engine oil and I am pleased with the results over the previous Shell Ultra Helix.
I was planning on just a pan drain and refill on mine, I can get the AISIN T-IV from ROCKAUTO for less than $5 qt.



That $5 a quart price goes up considerably when you factor in shipping costs.....but I agree that Aisin is a Toyota subsidiary so I would think their T-IV fluid would be great in a Toyota.
 
I have been told that Toyota T-IV and Aisin T-IV is the exact same fluid. If you notice, Aisin is the only other ATF fluid that says it is "T-IV" on the bottle. Most other brands merely reference their similarity, meets exceeds, compatible with, etc. to "T-IV".

I called Aisin and they told me their T-IV was the exact same as Toyota T-IV.

I only pay $4.50/qt for Toyota T-IV from my Lexus dealer.

If you decide to purchase from Rock Auto, play with the number of qts and see how it affects shipping. You may be amazed as the shipping cost is not linear.

To clarify, I only use Toyota T-IV. My goodness, the price is right and I know it is the REAL deal.
 
If you look up Idemitsu T-IV it is called "TLS", not T-IV

If you look up Beck Arnley T-IV is says on the front of the bottle at the bottom of the label "ATF for T-IV."

If you look up Aisin T-IV, it is called and labeled "T-IV".

Of those three, only Aisin says on its bottle is it "T-IV".
 
I've had Service Pro Global Full Synthetic ATF in my Tacoma for 40k now and no problems. It's a universal type too, so have no fear in using one of those! Seems you can't just find Type IV in synthetic for some reason. Pickup transmissions get hot, I want the best in there! Plan on changing it again at 60k, still looks new though currently.
 
Originally Posted by Trav
It not the car manufacturer that you should be concerned with but the transmission manufacturer.
Avoid AM&M model fluids and full synthetics in these units. I also have a stash of Aisin for these units, its a great price.



Trav:

What is "AM&M model fluids," and

Why should I avoid a full synthetic in an Aisin auto transmission?
 
All makes and models that supposedly are suitable for 34+ specs including cat urine and peppermint oil to keep mice away. These are basically dex clones tweak to work in almost anything they can think of. They are suitable for dex/Mercon units.
Synthetics are fine for Aisin units that spec dex fluid but the ones that spec T-IV Aisin had seal compatibility concerns are are pretty adamant about not using it.

For the dex spec units if they spec dex II or III do not use dex VI again seal compatibility concerns, use Amsoil ATF (not ATFL), Redline D4, Mobil 1 synthetic ATF, etc.
The Aisin T-IV is ideal for yours, use it and sleep well. One you have the bulk of it changed out either with a line off exchange or 4-5 drain and fills a single drain and fill every 20K is more than good enough to keep it in good order.
I do a drain and fill every fourth 5K oil change, it comes out nice and red.
 
I currently have Comma MVATF Plus in my Aisin TF71-SC 6 speed gearbox and it seems absolutely fine. I don't think these Aisin units are at all fussy.
 
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….. their ATF-0T4 (T-IV) he said they have 3 different ATF fluids for Toyota Transmissions and they all are sourced from the OEM suppliers for Toyota although he wouldn't give me the names of the sources since its all Hush hush about divulging that info, so I mentioned would Mobil be a source because I know the OEM T-IV or JWS 3309 is a Mobil product but he wouldn't come clean on it.
Not sure why the "hush hush", sounds silly to me. So in essence the Aisin tech dude said (or implied) they are using the XOM manufactured/blended Toyota T-IV ATF and putting it in their own bottle? That's the way it appears to read here imo. The Toyota T-IV ATF product is clearly in an XOM bottle. I suppose if you trust his information, want to stick with T-IV and can obtain the Aisin ATF bottle for significantly less than Toyota T-IV, seems a logical choice.

Fwiw, I'd add the Aisin ATF (Honda) DW1 bottle makes the same "OEM Engineered Formula" claim, and Amazon bullet points, "Genuine OEM automatic transmission fluid". VOA's posted here have proven the bullet point to be a false claim.
 
Toyota T-IV is about $6.50/quart at my local Toyota dealer. I'm absolutely certain that it's compatible, and meets specifications. I've used the Genuine Toyota fluid in multiple Aisin transmissions, including the Volvos in my signature, and it works great.

Why not buy it there?
 
Originally Posted by jrvn
im looking into substitutes for my Toyota Tacoma truck with a T-IV required ATF, my biggest issue would be to introduce a ATF that wouldn't be compatable with the OEM T-IV and start issues,


What do you want the substitutes to do that the Toyota fluid doesn't?
 
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