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Aisin Automatic Transmission Fluid

  

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Topic starter

We have a 2009 Lexus RX 350 that just hit 100,000 miles and works great. Because of the mileage I wanted to replace the transmission filter and do a transmission drain and fill. I found some Aisin brand ATF-0WS fluid that the label states is specifically engineered for 2004-2019 Lexus that requires WS Fluid. I am pretty certain that Aisin made the transmission in the car. My question, is this the same as Toyota brand WS fluid for compatibility and quality. Thank you.


3 Answers
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Aisin made the transmission. Just use the Toyota fluid to be safe, it really doesn't cost much more. Those transmissions don't really have a filter.


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Yes. 


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Yes, it should be fine. You should always consult your owners manual first as well.


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