Quote Originally Posted by Big Baller
Something else is wrong, a car with straight water will run cooler than one with straight coolant.
Ditto on that. Coolant/antifreeze is meant to prevent corrosion and keep the engine from freezing in winter conditions. Water is technically the best "coolant" due to its superior heat exchanging properties.

The absolute best results would be strait distilled water with Royal Purple Purple Ice. Wouldn't recommend it though...