Advice needed-ATF replacement Toyota SIenna

[2heeldrive]

A search here and everywhere, turned up lots of opinions, conjecture and theories but no hard evidence that WS fluid, is inferior ("garbage") and should not be used.

But... this is a forum of people who live to find the ultimate oil, so... use what you want... change it regularly and chances are it won't make any difference either way.

I did find an interesting article about the history of ATF that specifically mentions Toyota WS. Apparently, WS was engineered to maximize fuel economy.

History of ATF

 

[Job]

Use Toyota WS if you want the correct oil specifically engineered. There are a couple other names like Idemitsu which go to great lengths to explain what I just said and have similar products.

 

[Job]

https://www.idemitsulubricants.com/idemitsu/atf-cvtf

https://www.eneos.us/product/model-t-w/

https://www.idemitsulubricants.com/idemitsu-advantage#oil-7

As seen, the oils are specifically mentioned for Toyota components. Just like Toyota fluid. Not because they want to sell it but because it is engineered for the transmissions. The last link is evidence what I said earlier is true.

 

[ad244]

Maxlife is pretty good too:

https://www.amazon.com/gp/product/B...;linkId=4ca536473738dae1b1362ad999801565