Ally Radiators & Thermo Fans - Cooling System

[NissanGQ4.2]

There was coolant in the system and was only done just over 2 years before i changed the water pump but the mix was incorrect. My oem ally rad in my gu was cleaned 6 months ago and after i reversed flush the system i refilled it with the correct percentage of coolant but during the course of the year i had to resolve some issues like leaks and thermostat so the % changed, over christmas my trol started overheating so when i got back to work i pulled it out and sent it away again and you guessed it it was blocked. 40% blocked to be exact and it was blocked with alluminium oxide, caused by???? Electrolysis.

Weren't we just talking about a crappa door not a GU, so what you saying is the water pump picture from the crappa door was caused by incorrect mix???

And your GU problems was caused by incorrect percentage of coolant over the year because you just topped it up with water when you had leaks...... and if the correct percentage of coolant was maintained over the year it would not of happened???

Maybe the beers are going to my head and I just don't understand what your getting at