I'm sure many have considered and installed expansion radiator bottles on your Holden 308s.
Now I don't have any issues with overheating, but I don't like the idea of my coolant level staying about half way down the on the radiator looking through the neck. I don't loose any coolant at this level.
I like the idea of having that extra half a litre or 1 litre of coolant in the system which is why I am thinking of it.
Would appreciate any advice on the matter and pics would be great as well.
Thanks in advance