Here is another prime example of why marine water heaters are DRAINED in the winter. This owner attempted to dilute the six gallons of water with seven gallons of antifreeze.... Seems reasonable... WRONG!
Fill a 16 oz glass with milk. Now place it under the faucet and turn the faucet on. Let me know how many GALLONS of water it takes until the water in the glass is clear....... FAIL!!!!!!