Quote Originally Posted by johno90 View Post
Oo and if you habe a coolant leak into combustion chamber and burn you will find that it shall actuall clean the plugs. Same deal as water meth and also just pouring water into it when its runnig good old skool way of cleaning out all the carbo etc. (Must do above methed correctly tho please dont stick the garden hose down ur motor)

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Yeah, that makes sense.
I've been using only the rust inhibitor in the coolant(no anti freeze) with deminerlized water.
I was once speculating whether that had something to do with the red stuff, but that's also counter intuitive 'cos rust inhibitor should've reduced the claimed "ferric oxide" in my initial argument.