To use toothpaste to remove a tan from your hands, simply apply your tanner as you normally would. Once you are finished, squeeze a dollop of toothpaste into your palm and rub as if it was soap, making sure to get between your fingers and around your nails.
When circulation is complete, the coolant or antifreeze mixture is then drained and replaced with the standard mix of coolant and water. There is no set rule for how often a vehicle needs a radiator flush. Car manufacturers recommend that it be done at least every other year or every 40,000 to 60,000 miles. Occasionally flushing the radiator before that period is not a problem as it helps to clean and prevent build up of dirt and sediment.
The concentration levels should be between 50% and 65% coolant concentrate. This mixture will have a freeze point protection of -34 degrees Fahrenheit. If the concentration is below 50%, the cooling system must be flushed not simply drain or flush radiator and add. If the vehicle's coolant is low, drained out, or the customer has repeatedly added coolant or water to the cooling system, then the cooling system should be completely flushed.