Which oil to use for transmission

I attached the specifics about the fluid and capacities.

Let me know if you have questions. Thanks

Thanks very much! Would you maybe have any suggestions in regards to brands/particular products?

Your unit takes a specific fluid called Type T-IV. Many say that you can just use a Dextron alternative but the link below gives a pretty good price.

https://www.amazon.com/TOYOTA-Genuine-Automatic-Transmission-Type-4/dp/B00EV5A5NC

If it were me, I would stick with the OEM fluid just because it is not a common ATF. I am sure you can find alternatives but again, unless they say they are direct replacements I wouldn't use it and I have not found one that says it is.

Just to jump in with my personal experience. When T4 first came out, working at an independent shop I thought using something close to it was okay. I was so wrong it caused transmission failure.

Every manufacturer is going with there own fluid there is no magical universal fluid to substitute what really goes in. When I go to my Bureau Of Automotive repair smog training we talk about the dirty little word called aftermarket. Some aftermarket parts maybe okay but when it comes to fluids, especially transmission fluid it is a safe bet to go with the OEM.