| Description | Date | Identifier | |
| Page 2 of a letter to O.T. Jones regarding a chemist's opinion on figures for a roller race and the search for a suitable hypoid oil. | 3rd Apr 1939 | Box 145 \ 2 scan0259 | |
| Sample of Mobiloil 'A' removed from chassis No. WXA 36. | 3rd Apr 1939 | Box 145 \ 2 scan0260 | |
| Ongoing 10,000-mile engine oil test for vehicle WXA-36. | 4th Apr 1939 | Box 145 \ 2 scan0261 | |
| Letter from Vacuum Oil Company Limited regarding information passed to their Chief Technologist. | 12th Apr 1939 | Box 145 \ 2 scan0262 | |
| Letter from the Vacuum Oil Company arranging a meeting to discuss Mobiloil 'GX' tests. | 21th Apr 1939 | Box 145 \ 2 scan0263 | |
| Letter to the Vacuum Oil Company regarding the loan of steel and bronze samples and an oversight in returning 'GX' oil. | 9th May 1939 | Box 145 \ 2 scan0264 | |
| Dispatch of a 5-gallon drum of oil to stores for return to Vacuum Oil Co. | 10th May 1939 | Box 145 \ 2 scan0265 | |
| Engine oil sample from chassis WXA 36. | 25th Apr 1939 | Box 145 \ 2 scan0266 | |
| Letter chasing the delivery of Mobiloil GX samples required for immersion tests. | 6th Jun 1939 | Box 145 \ 2 scan0267 | |
| Letter to O.T. Jones of Vacuum Oil Company Ltd. apologising for a delay in sending steel and bronze samples. | 7th Jun 1939 | Box 145 \ 2 scan0268 | |
| Letter from Vacuum Oil Company, Limited regarding test pieces and further immersion tests. | 8th Jun 1939 | Box 145 \ 2 scan0269 | |
| Confidential letter to the Vacuum Oil Company regarding a report on extended engine oil change intervals. | 13th Jun 1939 | Box 145 \ 2 scan0270 | |
| Letter to the Vacuum Oil Company Ltd. regarding the dispatch of mild steel and phosphor bronze for corrosion tests with Mobiloil GX. | 15th Jun 1939 | Box 145 \ 2 scan0271 | |
| Arranging the dispatch of phosphor bronze bushes and mild steel pieces for testing. | 15th Jun 1939 | Box 145 \ 2 scan0272 | |
| 'BRIKALOR' graphited lubricating oil. | 18th Jun 1934 | Box 145 \ 3 scan0001 | |
| Advertising brochure for BRIKALOR graphited lubricating oils, detailing its advantages and test results. | 10th Feb 1934 | Box 145 \ 3 scan0002 | |
| Promotional brochure for 'BRIKALOR' graphited lubricating oil, detailing its benefits and performance. | 10th Aug 1936 | Box 145 \ 3 scan0003 | |
| Letter from Silvertown Lubricants Limited proposing a trial of a new Running-in Compound for engines. | 10th Aug 1934 | Box 145 \ 3 scan0004 | |
| Article reprinted from the AEC Gazette regarding the use and benefits of Colloidal Graphite in engines. | 1st Nov 1933 | Box 145 \ 3 scan0005 | |
| Article reprinted from 'The Motor' magazine about the modern method for running-in new engines. | 27th Feb 1934 | Box 145 \ 3 scan0006 | |
| Publication titled 'Acheson Colloidal Graphite' by A.G.D. Clease. | 11th May 1934 | Box 145 \ 3 scan0007 | |
| Article on the properties and benefits of colloidal graphite as an additional lubricant for engines. | 11th May 1934 | Box 145 \ 3 scan0008 | |
| Informational leaflet for Acheson Colloidal Graphite lubricants for automobile engines. | 1st Jan 1931 | Box 145 \ 3 scan0009 | |
| Bulletin on the mechanics of lubrication and the application of colloidal graphite to industry. | 1st Jan 1931 | Box 145 \ 3 scan0010 | |
| Technical bulletin on the properties and application of colloidal graphite particles for lubrication and the concept of oiliness. | 1st Jan 1932 | Box 145 \ 3 scan0011 | |
| Technical bulletin on the application of colloidal graphite for improved lubrication in internal combustion engines. | 1st Jan 1932 | Box 145 \ 3 scan0012 | |
| Bulletin on the benefits and applications of colloidal graphite lubricants for engine run-in, upper cylinder, and gear lubrication. | 13th Feb 1934 | Box 145 \ 3 scan0013 | |
| Booklet on car lubrication, reproduced from 'The Motor' magazine. | 13th Feb 1934 | Box 145 \ 3 scan0014 | |
| Article on lubrication, detailing types of oil and grease for engines, chassis parts, and gearboxes. | 13th Feb 1934 | Box 145 \ 3 scan0015 | |
| Technical article on lubrication, the use of colloidal graphite, and oil properties in car maintenance. | 13th Feb 1934 | Box 145 \ 3 scan0016 | |
| Technical article on lubrication for car maintenance, covering engine oil and the transmission system. | 13th Feb 1934 | Box 145 \ 3 scan0017 | |
| Recommendation of thinner oils for cold weather conditions in instruction books. | 8th Oct 1934 | Box 145 \ 3 scan0018 | |
| Recommendation and testing of thinner oils for improved cold weather starting in Bentleys. | 12th Nov 1934 | Box 145 \ 3 scan0019 | |
| Internal request to order various brands of winter oils for use in experimental cars. | 13th Nov 1934 | Box 145 \ 3 scan0020 | |
| Request from The Texas Oil Company to test their oils for Chassis and Aero Engines. | 16th Nov 1934 | Box 145 \ 3 scan0021 | |
| Letter from The Texas Oil Company Ltd. requesting the testing and approval of their oil for use in Rolls-Royce engines. | 6th Nov 1934 | Box 145 \ 3 scan0022 | |
| The decision not to conduct exhaustive tests on Valvoline oil or add it to the recommended list. | 28th Dec 1934 | Box 145 \ 3 scan0023 | |
| Query regarding the suitability and recommended grade of Essolube oil for Bentley cars. | 18th Jan 1935 | Box 145 \ 3 scan0024 | |
| Inability to test Essolube oil and suggesting contacting the manufacturer for recommendations. | 28th Jan 1935 | Box 145 \ 3 scan0025 | |
| Letter from the Anglo-American Oil Company regarding a test on Essolube Oil. | 2nd Feb 1935 | Box 145 \ 3 scan0026 | |
| Letter to the Anglo-American Oil Company Ltd. stating a test has not been carried out on Essolube Oil. | 14th Feb 1935 | Box 145 \ 3 scan0027 | |
| Declining to test or recommend Speedolene oil from Silvertown Lubricants Ltd. | 24th Apr 1935 | Box 145 \ 3 scan0028 | |
| Letter from John J. Macphie & Co., Ltd. proposing their new motor oil 'HERMOIL' for testing. | 11th May 1935 | Box 145 \ 3 scan0029 | |
| Letter from John J. Macphie & Co. Ltd. to E. Hives requesting quantities and grades of 'HERMOIL' for testing. | 11th May 1935 | Box 145 \ 3 scan0030 | |
| Letter to Messrs. John Macphie & Co. Ltd. declining to test new oils due to the expense and time involved. | 13th May 1935 | Box 145 \ 3 scan0031 | |
| Letter from Ethyl Export Corporation regarding the examination of corroded crankshaft pin oilers. | 20th May 1935 | Box 145 \ 3 scan0032 | |
| Confirming no harm in mixing lubricating oil brands and that supplier labels on new chassis should be deleted. | 21th May 1935 | Box 145 \ 3 scan0033 | |
| Letter from Ethyl Export Corporation regarding corroded crankshaft pin oilers and potential causes. | 29th May 1935 | Box 145 \ 3 scan0034 | |
| Letter to W. A. Robottam requesting a used oil sample for a thorough investigation. | 29th May 1935 | Box 145 \ 3 scan0035 | |
| Letter to F.R. Banks of Ethyl Export Corporation regarding destroyed oil evidence and arranging a meeting. | 30th May 1935 | Box 145 \ 3 scan0036 | |
| 'Filtrate' running-in-compound and an associated publication from Edward Joy & Sons, Limited. | 27th Nov 1935 | Box 145 \ 3 scan0037 | |
| Article, reprinted from 'The Light Car', discussing the case for using colloidal graphite as a lubricant in automobiles. | 12th Jan 1934 | Box 145 \ 3 scan0038 | |
| Article advocating for the use of colloidal graphite in running-in compounds and upper-cylinder lubricants to reduce engine wear. | 14th May 1937 | Box 145 \ 3 scan0039 | |
| Article, reprinted from 'The Autocar', on servicing a new car during the first two thousand miles. | 8th Mar 1935 | Box 145 \ 3 scan0040 | |
| Guide to vehicle maintenance and care during the first two thousand miles of ownership. | 1st Jul 1936 | Box 145 \ 3 scan0041 | |
| Letter from E. G. Acheson Ltd. discussing the use and testing of colloidal graphite in lubricants for engine assembly and running-in. | 1st Jul 1936 | Box 145 \ 3 scan0042 | |
| Letter to E.G. Acheson Ltd. requesting test results for colloidal graphite lubricants. | 8th Jul 1936 | Box 145 \ 3 scan0043 | |
| Letter from E.G. Acheson Ltd. acknowledging receipt of a letter and promising a full reply. | 9th Jul 1936 | Box 145 \ 3 scan0044 | |
| Inquiry from Paddon Brothers Ltd regarding the validity of claims about Colloidal Graphite. | 29th Jul 1936 | Box 145 \ 3 scan0045 | |
| Advertisement for K.W. Colloidal Motor Graphite, detailing its performance benefits and application. | 29th Jul 1936 | Box 145 \ 3 scan0046 | |
| Promotional leaflet for K-W Graphite motor oil, with graphs demonstrating its heat resistance. | 31th Jul 1936 | Box 145 \ 3 scan0047 | |
| Letter to Messrs. Paddon Brothers Ltd. regarding the use of Colloidal Graphite. | 31th Jul 1936 | Box 145 \ 3 scan0048 | |
| Oil specifications and layout improvements for the Phantom III instruction book. | 27th Aug 1936 | Box 145 \ 3 scan0049 | |
| Sending five petrol cans back to the Anglo-American Oil Co. | 1st Sep 1936 | Box 145 \ 3 scan0050 | |
| Cover memo forwarding a copy of instructions for the return of cans to stores. | 1st Sep 1936 | Box 145 \ 3 scan0051 | |
| Excessive end clearance on the float lever for a Phantom III Oil Level Indicator. | 5th Nov 1936 | Box 145 \ 3 scan0052 | |
| Potential recommendation of Duckham's Oil for their vehicles, comparing it to Shell. | 9th Nov 1936 | Box 145 \ 3 scan0053 | |
| Copy of a letter from Mr. P.M. Stewart providing a testimonial for Duckham's oils, detailing experiences from 1904 onwards. | 6th Nov 1936 | Box 145 \ 3 scan0054 | |
| Page 2 of a letter from P.M. Stewart to A.F. Sidgreaves regarding the use of Duckham's oil and future developments. | 6th Nov 1936 | Box 145 \ 3 scan0055 | |
| The arrival of Duckham's Oil and related correspondence. | 12th Nov 1936 | Box 145 \ 3 scan0056 | |
| Letter to Duckham regarding the submission of winter and summer grade oils for bench testing and standardisation. | 12th Nov 1936 | Box 145 \ 3 scan0057 | |
| Bench testing and standardisation of Duckham's winter and summer grade engine oils. | 10th Nov 1936 | Box 145 \ 3 scan0058 | |
| Letter from Alexander Duckham & Co Ltd confirming the despatch of three barrels of oil. | 23th Nov 1936 | Box 145 \ 3 scan0059 | |
| Internal memorandum regarding correspondence with Duckham's Oils. | 24th Nov 1936 | Box 145 \ 3 scan0060 | |
| Letter to Duckham regarding the submission of winter and summer grade oil for bench testing and standardisation. | 12th Nov 1936 | Box 145 \ 3 scan0061 | |
| Letter discussing the complexities and benefits of using thinner oils for motor car engine lubrication. | 21th Nov 1936 | Box 145 \ 3 scan0062 | |
| Letter discussing various motor oils and their viscosities for summer and winter use, and recommending specific grades. | 25th Nov 1936 | Box 145 \ 3 scan0063 | |
| 'Sg.' to 'Rm.' regarding the performance of Duckham's Oils in improving engine starting. | 25th Nov 1936 | Box 145 \ 3 scan0064 | |
| Use and testing of various low viscosity lubricating oils, such as Duckham's and Mobil-arctic. | 26th Nov 1936 | Box 145 \ 3 scan0065 | |
| Technical memorandum regarding Phantom III engine oil filling issues, sump baffle design, and potential modifications. | 26th Nov 1936 | Box 145 \ 3 scan0066 | |
| Letter to Alexander Duckham & Co. Ltd. acknowledging receipt of oil samples and requesting viscosity data. | 28th Nov 1936 | Box 145 \ 3 scan0067 | |
| The recommendation of winter oils for Phantom III cars. | 27th Nov 1936 | Box 145 \ 3 scan0068 | |
| Duckham's Oil, enclosing an extract from a letter by Mr. Duckham. | 9th Dec 1936 | Box 145 \ 3 scan0069 | |
| Extract from a letter concerning the effects of modern fuels on carburettors and cylinders. | 26th Nov 1936 | Box 145 \ 3 scan0070 | |
| Letter concerning a potential meeting between the Head of the Experimental Department and Mr. Duckham's Chief Chemist. | 9th Dec 1936 | Box 145 \ 3 scan0071 | |
| Placement of oil coolers on Wraith and Bentley engines with larger crankshafts. | 15th Dec 1936 | Box 145 \ 3 scan0072 | |
| The use of winter oil for Phantom III engines. | 21th Dec 1936 | Box 145 \ 3 scan0073 | |
| Letter from the Experimental Department requesting an urgent shipment of 'Hi-press oil' to France for a Bentley 10,000 miles test. | 31th Dec 1936 | Box 145 \ 3 scan0074 | |
| Challenges with the increasing number of recommended lubricants in the Instruction Book. | 11th Jan 1937 | Box 145 \ 3 scan0075 | |
| Inclusion of Belmoline lubricants in the 1937 instruction books. | 8th Jan 1937 | Box 145 \ 3 scan0076 | |
| Modification to the Phantom III engine's lubrication system for the push rods. | 9th Jan 1937 | Box 145 \ 3 scan0077 | |
| Duckham's Oil, explaining a delay in oil tests due to production issues with bearings. | 19th Jan 1937 | Box 145 \ 3 scan0078 | |
| Update regarding Duckham's Oil. | 19th Jan 1937 | Box 145 \ 3 scan0079 | |
| Comparing proposed Shell oils and greases against current production lubricants for various components. | 22th Jan 1937 | Box 145 \ 3 scan0080 | |
| Letter from Alexander Duckham & Co Ltd discussing travel arrangements and train times for a meeting. | 22th Jan 1937 | Box 145 \ 3 scan0081 | |
| Letter to S.E. Bowrey of Alexander Duckham & Co., Ltd. confirming a lunch meeting. | 23th Jan 1937 | Box 145 \ 3 scan0082 | |
| Promotional letter from J. English & Co., Ltd. about their new 'Carbonil' Speed Motor Oil. | 16th Feb 1937 | Box 145 \ 3 scan0083 | |
| Letter from J. English & Co. Ltd. promoting their S.P. 'Carbonil' Speed Oil. | 16th Feb 1937 | Box 145 \ 3 scan0084 | |
| Letter declining to test a new motor racing oil from J. English & Co., Ltd. | 18th Feb 1937 | Box 145 \ 3 scan0085 | |
| Follow-up letter from Alexander Duckham & Co Ltd regarding the progress of tests on their oil. | 25th Feb 1937 | Box 145 \ 3 scan0086 | |
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