One of my supplier also offer me this Amsoil product as replacement. Amsoil shock Therapy #5. Not exactly the same grade viscosity oil but close enough i think.
https://amsoilcontent.com/ams/lit/databulletins/g1663.pdf
Also this spec sheet can do the job but not sure if this will do damage to the seals.
https://msds.uapinc.com/msds/PDF/FICHES/ASF01-077%20Clear%20AW%2010%20hydraulic%20oil%20ANG.pdf
Greeting everyone, after read everything here and made my own research i came into a conclusion that the best suitable replacement fluid for AHC system is an Hydrolic oil AW ISO 10. Same viscosity and property than the Toyota AHC fluid.
There some spec sheet...