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).
Using Ethylene Glycol as an antifreeze in cooling systems, detailing mixture ratios and application.
| Identifier | ExFiles\Box 151\3\ scan0143 | |
| Date | 8th March 1930 | |
| Y1435. To C. From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}1/MJ.8.3.30. RADIATOR CORROSION. XJ 5/6 Y1435 With reference to C19/C28.2.30. The test using Ethylene Glycol merely consists of running a car about with this substance mixed with water in the cooling system. The quantities we recommend are two gallons Ethylene Glycol and five and a half gallons of water. We think that it is most improbable that any trouble will be experienced as this is the standard mixture now used in all R.A.F. machines having water cooled engines. It gives immunity from freezing down to somewhere below zero. Particulars of where you can obtain Ethylene Glycol are inserted on the Depot sheet circulated on the subject. If you cannot get any we have a supply here. Ethylene Glycol and water should be mixed before inserting in the cooling system and a label should be attached to the drain tap so that Ethylene Glycol should not inadvertently be run away. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||