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).
Promotional leaflet for 'Colgra Plated Lubrication' featuring an engineer's sworn statement on its performance.
| Identifier | ExFiles\Box 146\2\ scan0220 | |
| Date | 10th January 1936 | |
| ENGINEERS' SWORN STATEMENT! COLGRA belongs in every auto, truck, tractor and machinery of all kinds. The small amount required to convert any ordinary oil into a “plated lubrication” makes it amazingly economical to use. The increased film strength of ordinary oil when COLGRA is added as attested to by J.{Mr Johnson W.M.} A.{Mr Adams} Gitzen, Engineer and member of the Society of Automotive Engineers, is conclusive proof of the added protection that COLGRA affords. It has been positively proved that COLGRA meets all SAE requirements and will not corrode or injure even the finest mechanisms. — SOLD BY — ENGINEER'S SWORN STATEMENT State of Wisconsin ) ss.{S. Smith} County of Milwaukee) (Affidavit of Laboratory Report on Colgra Superfilm (A Special Lubricant)) BREAKDOWN TESTS OF COLGRA SUPERFILM Motor Oil No. 1, SAE 20, untreated, broke down at 2,000 lbs. Same oil treated with 6% Colgra Superfilm showed no breakdown at 15,000 lbs. An increase in Film Strength of over 650%. Motor Oil No. 2, SAE 20, untreated, broke down at 3,000 lbs. Same oil treated with 6% Colgra Superfilm showed no break-down at 15,000 lbs. An increase in Film Strength of over 400%. Motor Oil No. 3, SAE 10, untreated, broke down at 2,000 lbs. Same oil treated with 6% Colgra Superfilm broke down at 12,000 lbs. An increase in Film Strength of 500%. J.{Mr Johnson W.M.} A.{Mr Adams} GITZEN, Engineer Member Society Automotive Engineers. Subscribed and Sworn to Before me this 10th day of January, 1936 E.{Mr Elliott - Chief Engineer} E.{Mr Elliott - Chief Engineer} SCHNEIDER, Notary Public My Commission Expires June 27, 1937 COLGRA PLATED LUBRICATION DOUBLES LUBRICATING VALUE OF ANY OIL! NEEDED BY EVERY USER OF GASOLINE (Petrol)—OIL—GREASE Adds from 50% to 600% film strength to any oil or grease COLGRA WORKS PERFECTLY WHEREVER IT IS USED IDEAL FOR— - Automobiles - Trucks - Tractors - Motorcycles - Marine and internal Combustion Motors - Electric Motors & Generators - Turbines - Industrial and Farm Machinery of all kinds RADIANT PRODUCTS, INC. AKRON, OHIO, U. S. Printed in | ||