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).
Use and approval status of Price's Zero Glycerine anti-freeze mixture.
| Identifier | ExFiles\Box 151\3\ scan0186 | |
| Date | 10th January 1933 | |
| W/S. Cx.{Major Len W. Cox - Advertising Manager} from Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey} 8143 S. Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey}9/KT.10.1.33. Re. ANTI FREEZING MIXTURE. Cx.{Major Len W. Cox - Advertising Manager}6/KW.9.1.33. We have not yet approved of Price's Zero Glycerine, and shall not be in a position to do so until after the winter is over. We have several cars running with it in, and shall examine the cylinder block water-ways after the winter is over, before we can definitely approve of it. Laboratory tests we have made on it appear favourable, so that if the car is likely to be under our control for some time, it would be useful to us if you use Zero in it, and let us know after the winter is over whether you notice any defects in the cooling system (such as overheating). It is quite O.K. as regards stopping freezing. The Zero Glycerine at present marketed by Price's contains the chemical you refer to, which has the effect of reducing corrosion of steel and aluminium. Before putting in the Zero Glycerine the water system should be thoroughly flushed out, and if any of the rubber connections show signs of being perished, new ones should be fitted. (This procedure applies, of course, to all anti freeze mixtures). Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey} | ||