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.
On still other Mercedes, it's 150,000 miles or 15 years. Some manufacturers recommend changing the coolant more often on vehicles subjected to severe service, such as frequent towing. The schedule for many Chevrolets, though, is to change it at 150,000 miles regardless of how the vehicle is driven.