Thread: Oat coolant/ green stuff

It you are wanting to change over to OAT it's usually pink/red
but other colours are on the market.
Drain and fill with pure water bleed etc run for a couple of days
then do the same again you should have got rid of the green stuff
an then fill with an OAT mixture remember when you drain the
coolant via the drain plug on the steel pipes below the radiator
you will not fully drain the coolant system you only get 8litres
out the block pipework heater etc will hold some fluid total
fluid approx 11.5litres.
that's why you need to fill couple of times to purge the green stuff.

If it gives you piece of mind to do this its a good thing if you are
going to change to OAT it's a good idea to remove and inspect
ALL hoses and clean the stubs that the hoses fit onto OAT finds
leak paths more than glycol or water.

A new cap and thermostat wouldn't do any harm either and you will
have the coolant system in good order for a while.

Pete

Thanks for that Pete.
One question I have is , Does the green stuff cause any problems to the system. I guess it is not good to have the the green or all discos would use it.
Will I get any chemical degradation if there are traces of the green (glycol) in the system still.
The local LR workshop told me not to bother changing . Any thoughts on the matter?

For what its worth I have used nulon coolant green colour for 2 years with no issues, when draining its always fairly clean ans radiator hoses where clean when I changed them


cheers

Ken

OAT doesnt cause a reaction between dissimilar metals, plus its a long life product.
a non-oat is fine in the V8 if changed regularly.

beware though,, the oat will find ANY weepholes