Just got round to doing the hydroflush on my XM, the LHM had been changed as the service book required but I was getting what seemed like a sticking valve on start up and suspension staying hard for a time.
Think the car has done less than 20000 miles since the last lhm change. It came out almost black though.
For emptying the LHM tank I bought a cheap drill pump from Wilcos for £7.99.
Added a couple of short lengths of garden hose to it, this emptied the tank quickly and easily with a battery drill.
One quick question though is it worth bleeding the brakes with the hydroflush? They seem fine to me, had no issues. I was planning on just bleeding the brakes with the new LHM after the flushing process. Any thoughts welcome.