Hi,
No by what I believe the Toyota stuff is a specific product, I got mine from Milners as it was the correct OEM product but a fair bit cheaper than direct from the dealer.
A 5 ltr can will change the fluid in the system and still have a small drop left over for future use, it seems no one bothers to swap the oil and mine was a dark muddie brown the first time I changed it.
A straight forward job but I did take the time to give my bleed screw several applictions of pentrating fluid a few days before just to ensure they came undone, a length of tube was the only other item that came in handy, to shoot the old oil into a plastic bottle. I also kept topping up the resivoir to max so as not to let any air in the system.
Now I just let a little out every time I am under the car doing other jobs and top up the resvoir accordingly, I like to see clean(ish) oil come out, then I am happy.