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).
From a visit to Cadillac and Chevrolet, discussing engine crankcase ventilation, acid fumes, and oil performance.
| Identifier | ExFiles\Box 173\4\ img057 | |
| Date | 18th November 1935 | |
| hotel Book-Cadillac Detroit NATIONAL HOTEL MANAGEMENT CO., INC RALPH HITZ - PRESIDENT HOTELS NEW YORKER, LEXINGTON, NEW YORK, NETHERLAND PLAZA, CINCINNATI, RITZ-CARLTON, ATLANTIC CITY, VAN CLEVE, DAYTON Telephone Cadillac 8000 Sg{Arthur F. Sidgreaves - MD} Wor{Arthur Wormald - General Works Manager} E By Holy To Hs{Lord Ernest Hives - Chair} We went to Cadillac's today. We saw Mr Buxton, Fraser, chassis designer for Chevrolet and also had lunch on a their affairs & problems. We discussed (1) Thorough ventilation of the crankcase is important to prevent down acid fumes. They all said on weather or in V.12 much has been tested & that the sulphuric acid would account for the valve condition, little valve failures and (if this was bad) the abnormal timing chain wear. (2) Tests done at Chevrolet have shown wear was at very high oil temperatures up to 300 F and SAE 30 or even 20 oils are which lubricate down the thin oil is worn. They say in a warm car & from this point are very clear on results & the oil does not help lubrication. Although on crankcases in ignorance. Rather. On oil they recommend its use. SAE 30 or thinner for winter. & Fraser. Their test on V.12 oil temperature is pretty constant (125 F). | ||