Quote Originally Posted by GeeYou8 View Post
Demineralised water is what they sell as distilled water, it has the minerals removed through reverse osmosis, a physical process. Pretty much it is pure water.
50/50 with the right coolant is the way to go, don't buy premix as there is always some water left from flushing.
Graham
Yeah, I even put bit more than 50% of the rust inhibitor concentrate. The rust at the bottom of the block was probably left overs from previous build up. I didn't use anti freeze, just rust inhibitor, 'cos I thought anti freeze is not critical in Melbourne, unless I decide to spend time in the snow.