icerunner

Hey,
The manual specifies Dexron II (or Dexron III) for our 3 generation 4 runners. I personally know that Trans fluids over the past few years have become much more advanced.
After reading a few threads about this trans fluid (mobil atf 3309) and going to the mobil website and reading that this stuff was designed specificially for aisan transmissions..........

here are the specs:
Mobil ATF 3309 is an exceptionally high-performance lubricant that meets original equipment manufacturers’ specifications for use in certain slip-controlled lock-up automatic transmissions manufactured by Aisin AW Co. Ltd.High performance for specific requirements:Specially selected friction modifiers and highly refined base oils to meet the demanding requirements of Aisin slip controlled lock up converter automatic transmissions.

Meets key OEM requirements:----For many Toyota, Lexus, Volvo, Saturn, VW and other imported and domestic vehicles where Aisin transmissions are used.-----Meets key Type T-IV for Toyota/Lexus vehicles. Mobil ATF 3309 is recommended for use in transmissions made by Aisin AW requiring a fluid approved against Type T-IV, JWS 3309, GM 9986195 and Audi G-052-025-A2. These Aisin AW transmissions are used in CERTAIN domestic and foreign vehicles, including Toyota, Lexus, Audi, Saturn, Ford, Volvo, Volkswagen, Saab, Porsche, and Mitsubishi.The unique formulation of Mobil ATF 3309 is designed to provide excellent lubrication of transmissions in specified Aisin AW slip-controlled lock-up automatic transmissions. These outstanding performance capabilities translate into significant operational benefits, including:----Excellent lubricating characteristics for quiet operation and smooth shifting in approved transmissions.----Controlled friction properties for smooth and efficient transmission of power across all normal temperature ranges.----Helps to control transmission shudder and provide excellent vehicle driveability.----Helps to extend transmission life based on excellent wear control.----Long fluid life based on excellent oxidation resistance.----Excellent viscosity stability (high viscosity index) to help assure adequate lubrication without excessive thinning in severe high-temperature service or thickening at low starting temperatures.---Resistance to foaming. Superb protection against rusting and corrosion.Compatibility with transmission seal materials.

Applications:
Mobil ATF 3309 is recommended for use in transmissions made by Aisin AW requiring fluids approved against JWS 3309 or GM 9986195. It is also recommended for service fill applications where Toyota T-IV is needed. Please refer to the owners’ manual for proper fluid requirements.

Automatic transmissions should be checked for proper fluid levels at regular intervals, and the fluid should be changed at manufacturer-recommended intervals. However, this may vary due to your vehicle's operating conditions. Some manufacturers recommend more frequent changes of transmission fluid under severe driving conditions, such as heavy traffic, hot weather and trailer pulling.

does anyone know if this "3309" trans fluid will work well with our "3 generation" Aisin trans?

I am considering doing several "drain and fills" with this fluid .....
hey while were are at it....
Any other possible recomendations?

ozziesironmanoffroad

probably, callthem and ask them

icerunner

Hey, its a fair question to ask if anyone else has tried thisstuff (mobil ATF 3309), our aisin tran's call for DEXron II or III yet the past 10 years has brought to us better options (more advanced) in ATF fluids. I am also considereing Mobil Synthetic ATF as a good option due to its high and low temperature performance.
I just thought I'd rather base my decision on the experiences of others before I just go ahead a make a move, a wrong choice could be an expensive choice.
later

86tuning

Type T-IV is NOT the same as DexIII and is not interchangeable.

If you want to run a synthetic ATF for your trans, use a DexronIII synthetic fluid, not a Type T-IV fluid.

icerunner

Good info and that more of what I was looking for, thanks....

mt_goat

Have you seen this thread?
https://www.yotatech.com/forums/f2/w...-other-105153/