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WiLo said:not on a VR but a VS and its easy, i did it without drainging the coolant though which would make it a bit less messier.
not sure what the heater tap is like on a VR but if its the same as a VS just undo the four clamps, then take the hoses off and lift the heads of them up so coolant doesnt go everywhere, then put hoses back on do up clamps, top up coolant, then park on a decent incline, have the engine warm then turn the heater onto the hottest setting and get any air bubbles out
ChRiDDa said:have a read through the guide i wrote chief
should give ya a good idea about how to do things
http://forums.justcommodores.com.au/showthread.php?t=28762