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[greenfingers 79]

as is says, had a warning on the dash, the tank was only 2/3rds full, havent noticed any leak anywhere, could this be a un seen problem?
topped the tank up with tap water but am asking how to drain the system and what to re fill with,
any advise welcomed

[dbug]

Which engine mate - makes a difference 

[MutantCav]

If its a V6 then the sensor on the header tank is probably sticking...take the cap off the tank and push the plunger up and down a bit...worst case a new header tank with sensor is only about £40...

Should be topped up with 50/50 Vaux pink antifreeze and water mix

[greenfingers 79]

its a 2.2dti,
is there a how to to drain the system or is it just a case of pulling the bottom hose off the rad and letting it drain that way?

[dad1uk]

If you look underneath the front of the car from just in front of the n/s wheel you will see the bottom of the radiator. There is a drain plug there for draining the system. You will only drain about half the water from the engine.

[I_want_an_Omega]

If you do drain half, you can then fill with water, take it for a spin and then drain again. Do this again a few times and only a small % of the original stuff will remain.

You should also flush/reverse flush the heater matrix whilst you are at it.

[greenfingers 79]

sound for the advise, what do i refill the coolant system with, any recomendations and how do i flush the heater matrix?
can someone help with any pics of both jobs please

[greenfingers 79]

sound for the advise, what do i refill the coolant system with, any recomendations and how do i flush the heater matrix?
can someone help with any pics of both jobs please

[the alarming man]

Which engine mate - makes a difference 

what are the differences??