That might not be such a good idea. Coolant is more than just something that stops water from freezing, and thus cracking the block. It is also designed to prevent corrosion in the cooling system, something that's very important in an aluminum alloy engine. Finally, a misture of coolant and water boils at a higher temp than just water, something that can help on a very hot day with a heavy load.GSteg said:the mixing depends on the environment you're in.
in hotter climate, i would rather use 30% coolant and 70% water.
In super extreme hot temperature (like death valley hot), I would use pure water with RedLine WaterWetter.