Doblo Doblo Multijet Coolant Change

When all the coolant is out, refit the bottom hose with a new clip or tighten the draincock. Mix some coolant and water in the jug, usually 50:50. Start pouring it into the expansion bottle. Keep an eye on the bleed screw. When water comes out of it close it. Keep filling it till the level is between the two marks. Try squeezing the hoses to get more air out. Now let the engine idle for 5 mins. Top up the expansion bottle if need be. Now close the bonnet to keep heat in, and let the engine run at a fast tickover until it is thoroughly warmed up. Now let it cool. When it is stone cold, top up the expansion bottle, and put the lid back on it. Job done.