Aisin WS ATF VOA

[AP9]

Aisin ATF0WS, Toyota WS type automatic transmission fluid
Shipped from RockAuto August 19, 2025

 

[dippschtick]

Just recently did a drain and fill on my 2018 4Runner with this.
All is well.

 

[fantastic]

Thanks for testing this Toyota ATF.

 

[Johnny248]

I thought that I read somewhere that Aisin WS is different than Toyota WS? Aren't most Toyota transmissions Aisin units?

 

[AP9]

I thought that I read somewhere that Aisin WS is different than Toyota WS? Aren't most Toyota transmissions Aisin units?

Yes, I did see that thread too, but I haven't seen any oil analysis to prove or disprove the hypothesis. This Aisin fluid went into my Aisin A750F, but I decided not to get a sample of the old FF fluid since it still looked immaculate after 73,000 miles (sorry), though there's no guarantee that the FF used in Tahara is the same source as the Toyota genuine WS ATF sold here.

 

[himemsys]

This fluid is also compatible with our 2013 Volvo S80 TF80SC transmission. Thanks for posting the VOA! This is likely the fluid I will use when I change it in this vehicle.