Power steering fluid

For the 360 the manual states, Shell Donax TA, which is now been replaced by Spirax S2 ATF AX.

However Spirax S2 ATF AX is only available in 20l tubs, so was wondering if Shell Spirax S4 ATF HDX (which is used for the f1 fluid), can do the job?

Thanks

 

Thanks.

I did note that the 360 manual states DA, but the F430 manual states DX. I assume it is an upgrade using the DX (Shell Spirax S4 ATF HDX)