hey
welcome to our forum
did you get jza70's from the factory or did you import it yourself?
here is the page for all the fluids and how much you need to top them up
http://www.cygnusx1.net/supra/library/TSRM/a/A_35.html
automatic transmission if you just drain it and refill it is 1.6litres
here automatic transmission fluid is $10 per litre for just normal transmission fluid
good luck