Hi JTDman,
I am new to the Multipla and I ask myself - what about bleeding air out of the system ?
I have had some impossible airlocks in PSA Peugeot/Citroen engines in the past, and since then this sort of thing keeps me awake at night. Especially when I read about people's JTD Multipla heaters underperforming... Sounds familiar from my experiences with PSA engines ! In the Multipla I have found the 2 bleed nipples ontop of the radiator and the one at the firewall on the pipe going through to the radiator.
In my technical manual it just says "fill cooling system with coolant", great...