From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Recommendations for anti-freeze mixture solutions for water circulating systems.
| Identifier | ExFiles\Box 151\3\ scan0015 | |
| Date | 15th September 1914 | |
| S (180 H) (W.W. 754. 15-9-14) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 0768. COPY ANTI-FREEZE MIXTURE. Now that the freezing weather is about due, it would be well to anticipate an unexpected drop in temperature, and to provide material for mixing suitable anti-freeze mixture to be used in your water circulating system. The following solutions have been found to be extremely satisfactory: For temperatures above 5 degrees below zero - 15% Alcohol. 15% Glycerine. 70% Water. For temperatures above 10 degrees below zero - 18% Alcohol. 18% Glycerine. 64% Water. Or - 35% Denatured Alcohol. 64% Water. We believe the above mixtures to be superior to those made by dissolving chemicals or patented anti-freezing substances. 1804 ---o0o--- MADE AT CROXLEY Handwritten on left margin: X/GJJ | ||