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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).
Letter from Vacuum Oil Company Limited regarding inhibitor-treated oils and greases.

Identifier  ExFiles\Box 145\1\  scan0276
Date  8th September 1938
  
1229-
OJS .
BY APPOINTMENT TO THE LATE KING GEORGE V.{VIENNA}
VACUUM OIL COMPANY LIMITED
GARGOYLE
REG TRADE MARK
TELEPHONE
WHITEHALL 1010 (14 LINES)
TELEGRAMS
VACUUM . PHONE . LONDON
CAXTON HOUSE . WESTMINSTER
LONDON
S . W . 1
REFERENCE
OTJ.
HRW/SOM
8th September, 1938.
Messrs Rolls Royce Limited,
DERBY, England.
Dear Sirs,
Confirming the conversation Mr. Russell Sharp had with Mr. S. H.{Arthur M. Hanbury - Head Complaints} Grylls and Mr. N. H.{Arthur M. Hanbury - Head Complaints} Walker on the 1st September, the inhibitor-treated oil which we have already supplied is quite satisfactory in both engines and gearboxes and will not cause corrosion or other damage if left in these units for considerable periods.
This type of oil is already in extensive use in aircraft engines abroad for prevention of corrosion, while its Extreme Pressure characteristics are beneficial in connection with running-in of new units. The special price established for this product for your requirements is 1/5d per gallon.
There has been discussion regarding supplying a different inhibitor-treated oil for running-in purposes which has an entirely different characteristic and which may not be suitable for allowing it to stay in engines after use. We are conducting some tests on this type of lubricant and will write to you again before we effect delivery of sample test quantity.
We also confirm that MOBILGREASE NO.6. is suitable for use in water circulation systems where Ethylene Glycol is used as an Anti-Freeze and we have had no questions arising in connection with water-pump lubrication where this type of product has been in service.
UNLESS STATED OTHERWISE ALL OILS ARE QUOTED AND INVOICED PER UNIT GALLON OF 9 LBS. AND ALL QUOTATIONS ARE WITHOUT ENGAGEMENT
  
  


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