japanalpine wrote: Oh, there is nothing in the system now after the huge heater hose blowout and lots and lots of fresh water ran through it to get it home.
OK ..... so it is flushed out ...... that's half way there. However there will still be a very large volume of water in the block which will only dilute the Type "D" coolant which is not what you want. I still suggest that whilst the engine is out, that the two block drain plugs are removed to drain both sides of the block. With the engine out there should be no problem but the plugs will be tight so a good fitting key on a ratchet lever should do the trick. Each plug has a copper washer which is the same as the oil drain plug washer ... 16mm dia', if I remember rightly.
Just on the subject of Type"D" coolant .... its not the anti freeze component of the coolant that's at stake here, its the inhibiting powers that is important because of the dissimilar metals used in the cooling systems of these Alpine cars.
This is the colour of the coolant ..... and this has been in for 5 years without discolouration.