Quote Originally Posted by chazza View Post
All good advice!

Check out this link to see what happens inside the block and head if you don't use corrosion inhibitor of some description,

Trans Tasman Land Rover Series 1 Register Forum • View topic - Sixpence

Cheers Charlie
It is not strictly necessary to use corrosion inhibitor if you use very pure water, although I would recommend it. The cases you see of severe corrosion will be the result of using water which is slightly corrosive, and deposits result from using hard water.

John