The rebuilding of Norman's 75 Eleganza II

Brown Nasties in the Coolant Overflow Tank ? The inside of the coolant overflow tank was deep brown in color and virtually opaque. The tank, although needing a new rubber hose, was functionally sound, but it just looked like the devil. So, how you may ask, does one remove the brown nasties from the inside of this vessel? I thought I would try the old burnt coffee pot or dirty bottle trick. Remove the tank, insert 8-10 regular ice cubes and shake the dickens out of it. After several minutes of this exercise, dump out what's left of the cubes and rinse with clean water. Lo and behold it was clean and just like the new ones they sell in the J.C.W. catalog.