cooling system

[peeingeye]

hello i would like give my cooling system on my vy calais a clean out but not sure the best way to do it i looked at supercheap today there is a few products like radiator fluch ect do they work and also what is the best coolant to use thanks

[david dubbo]

Reverse flush it. ie opposite way to what it flows

[thedeadwalk]

i find the best coolent is nulon get the concentrate and mix it 50/50

[vt s]

To flush it drain the coolant by taking bottom radiator hose off, then just take one of the heater hoses off (not at the heater core though), turn the temp to hot and hose into the hose you took off. You should see all the water come out the bottom hose and hold it until the water coming back out is clear.
Then just refill.