National Geographic : 1917 Nov
T HE only way you can be positive that your radiator won't freeze up in winter is to use a non-evaporating, anti-freeze preparation. The present high price of alcohol-its low boiling point-and quick evaporation make it impractical. Does Not Evaporate Johnson's Freeze-proof does not evaporate, so one application is sufficient for the whole win ter unless the solution is weakened by leakage of the radiator or hose connections, thru the overflow pipe, or by boiling over. JOHNSON'S FREEZE-PRO OF Johnson's Freeze-Proof is put up in packages containing 612 lbs. net which retail at $1.50 each in the U. S. A. One package will protect a Ford from freezing at 50 below zero. For larger cars use two packages to protect to 5° below zero, and three packages to protect to 200 below zero. Absolutely Harmless Johnson's Freeze-Proof contains no oil and does not inter fere with the cooling system. It will not injure rubber, cloth, packing or metal of any kind. It does not rust or corrode any metal. Johnson's Freeze-Proof is economical and easy to use and it raises the boiling point of water 12° to 25° Write for our new booklet entitled "Keep Your Car Young". We will send it to you free and postpaid The information in this booklet will enable you to greatly improve the appearance and performance of your car. S. C. JOHNSON & SON, Dept. NG11 RACINE, WIS. "Mention the Geographic-It identifies you."