Smallcar, sorry if it sounds like I’m doubting you but are you sure that’s correct as I’m pretty sure other posters have said all fluids are included.
Just seems a bit odd that something like engine oil which is far more expensive, “complicated” in terms of grade / topping up the amount correct and can cause serious problems wouldn’t be on the list when it makes good sense to be.
On the flip side screenwash is so cheap and easy to sort that beyond medical reasons it seems a bit daft going the the hassle of getting a dealer to sort it and adblue personally should be treated more or less the same as putting fuel in, unless again there is medical reasons for the dealer having to do it.