In case there is any interest, I ended up getting the very good independent workshop across the road to do it - genuine filters used, fully synthetic oil (the last not technically needed, but it's what Mitsubishi used also last service) - $380. I'm happy with that.
Apparently there's some legislation happening at the moment that will force manufacturers to provide access to their software tools for independent service providers (at a cost).
Apparently there's some legislation happening at the moment that will force manufacturers to provide access to their software tools for independent service providers (at a cost).