| Description | Date | Identifier | |
| Test report on the performance of Price's Heavy Gas engine oil, noting no improvement in consumption but easier cold starts. | 26th Feb 1909 | Box 16 \ 1 Scan002 | |
| Experiment notes on engine cylinder lubrication issues and piston swapping. | 4th May 1909 | Box 16 \ 1 Scan003 | |
| Test report on chassis 1136 engine lubrication and power performance following modifications to pistons and oil pipes. | 22th Sep 1909 | Box 16 \ 1 Scan004 | |
| Investigation into an oil leak from the crank chamber joints, resolved by fitting a paper joint. | 6th May 1926 | Box 16 \ 1 Scan005 | |
| Notes on engine oil pressure issues and diagnostics for two specific cases. | 1st Jan 1907 | Box 16 \ 1 Scan006 | |
| Note on crank chamber fluid levels and consumption for the 1907 No. 6 Cars. | 1st Jan 1907 | Box 16 \ 1 Scan007 | |
| Engine lubrication tests and results. | 1st Jan 1907 | Box 16 \ 1 Scan008 | |
| Note with a diagram detailing oil levels, gradients, and clearances in crank chambers for a specific test. | 1st Jan 1907 | Box 16 \ 1 Scan009 | |
| Notes on an oil test concerning the quantity of oil required in the crank chamber. | 1st Jan 1907 | Box 16 \ 1 Scan010 | |
| Tests concerning the quantity of oil in the crank chamber. | 1st Jan 1907 | Box 16 \ 1 Scan011 | |
| Notes on a lubrication issue where increasing gudgeon pin length cured piston knocks. | 26th Oct 1909 | Box 16 \ 1 Scan012 | |
| Notes on lubrication quantities and capacities for a starter motor. | 3rd Nov 1910 | Box 16 \ 1 Scan013 | |
| Engine oil temperature readings after a period of good running. | 21th Jul 1911 | Box 16 \ 1 Scan014 | |
| Test record comparing the performance of Wells cylinder oil against Prices C oil in car number 60526. | 21th Jul 1911 | Box 16 \ 1 Scan015 | |
| Note on a new lubrication method for engine bearings and the results after a 250-mile test. | 17th Mar 1910 | Box 16 \ 1 Scan016 | |
| Paper by G. H. Baillie discussing the best systems of lubrication for internal combustion engines. | 17th Mar 1910 | Box 16 \ 1 Scan017 | |
| Technical discussion on the merits of different engine lubrication systems. | 12th Oct 1910 | Box 16 \ 1 Scan018 | |
| Addressed to Mr. Johnson comparing the Daimler lubrication system to the Rolls-Royce system, detailing its inferiority. | 12th Oct 1910 | Box 16 \ 1 Scan019 | |
| Continued discussion on Daimler lubrication, outlining a theory for the cause of smoking in sleeve valve engines. | 23th Feb 1911 | Box 16 \ 1 Scan020 | |
| To Mr. Platford regarding a report on engine oiling systems and a modification for lubricating little end pins. | 23th Feb 1911 | Box 16 \ 1 Scan021 | |
| Engine lubrication tests on a dynamometer without an extra oiling device, comparing performance to Metallurgique cars. | 23th Feb 1911 | Box 16 \ 1 Scan022 | |
| Lubrication failure risk and the negative effects of adding excess oil to pistons. | 23th Feb 1911 | Box 16 \ 1 Scan023 | |
| Letter discussing engine lubrication, piston fitting, and the influence of rings on gas-holding properties. | 1st Apr 1911 | Box 16 \ 1 Scan024 | |
| Testing and oiling of 'little ends' to prevent engine knocking. | 15th Jun 1911 | Box 16 \ 1 Scan025 | |
| Request for a new drawing for a crankchamber tube as an experiment needs to be pushed forward without delay. | 29th Sep 1911 | Box 16 \ 1 Scan026 | |
| Meeting minutes discussing an oil retaining device for engine coupling joints and plate clutches. | 21th Nov 1911 | Box 16 \ 1 Scan027 | |
| Committee notice regarding a patent for crankchamber lubrication in three-cylinder engines. | 30th Nov 1911 | Box 16 \ 1 Scan028 | |
| Cover letter to Mr. Royce forwarding a memorandum from Mr. Platford to Mr. Johnson. | 13th Jun 1912 | Box 16 \ 1 Scan029 | |
| Mysterious engine knock in the 1300 series due to slack in the little end brasses and a proposed solution. | 7th Jun 1911 | Box 16 \ 1 Scan030 | |
| Describing the lubrication method for a bearing and pin, including entry points and tolerances. | 14th Jun 1911 | Box 16 \ 1 Scan031 | |
| Drawing and note explaining the lubrication of a connecting rod pin. | 4th Dec 1912 | Box 16 \ 1 Scan032 | |
| What information to supply to the 'Automotor Journal' about patented chassis parts and lubrication systems. | 4th Dec 1912 | Box 16 \ 1 Scan033 | |
| Request from 'The AUTO' motor journal for drawings and a description of the car's lubrication system for an article. | 29th Nov 1912 | Box 16 \ 1 Scan034 | |
| Meeting minutes discussing the testing of an oil retaining coupling and its interaction with the clutch mechanism. | 8th Dec 1911 | Box 16 \ 1 Scan035 | |
| Departmental memo advising against publishing details of patented engine lubrication due to the weakness of the patents. | 11th Dec 1912 | Box 16 \ 1 Scan036 | |
| The second page of a departmental memo requesting further advice on a point. | 11th Oct 1912 | Box 16 \ 1 Scan037 | |
| Departmental memo agreeing to the re-description of engine lubrication. | 13th Dec 1912 | Box 16 \ 1 Scan038 | |
| Departmental memo regarding the decision not to publish details of patented lubrication schemes in the Automotor Journal. | 16th Dec 1912 | Box 16 \ 1 Scan039 | |
| Departmental memo discussing the strategy of not replying to the Automotor Journal until they send a reminder. | 19th Dec 1912 | Box 16 \ 1 Scan040 | |
| Meeting minutes approving the standardization of an oil-tight coupling between the gearbox and clutch. | 29th Dec 1911 | Box 16 \ 1 Scan041 | |
| Copy of minute 8 from the 111th T.C. meeting discussing an oil pipe scheme for the 'Sluggard'. | 19th Jan 1912 | Box 16 \ 1 Scan042 | |
| Typed page giving instruction to pass a matter for construction without committee submission. | 19th Mar 1937 | Box 16 \ 1 Scan043 | |
| Requesting a car being tested in France be brought to England for extended mileage trials and examination. | 10th Jun 1912 | Box 16 \ 1 Scan044 | |
| Departmental memo regarding a big end bearing failure on experimental car 1649 due to a lack of oil. | 12th Jun 1912 | Box 16 \ 1 Scan045 | |
| Departmental memo discussing faults with crankshaft bearings, the clutch, spring drive coupling, and front spring. | 18th Mar 1912 | Box 16 \ 1 Scan046 | |
| Faults on a car, including a drawn-out eyelet and bent axle, and planning for its repair and testing. | 18th Mar 1918 | Box 16 \ 1 Scan047 | |
| Letter from F.H.R. to Claude Johnson regarding a big end bearing failure on an experimental car and suggestions for testing oil pressure. | 15th Jun 1912 | Box 16 \ 1 Scan048 | |
| From F.H. Royce discussing issues with a clutch, front springs, and a potentially bent front axle. | 18th Jun 1912 | Box 16 \ 1 Scan049 | |
| Letter from F.H.R. to Claude Johnson regarding a report on oil pressure issues and the fitting of engine bearings and liners. | 18th Jun 1912 | Box 16 \ 1 Scan050 | |
| Departmental memo discussing a report on an extra oiling device for chassis 1414 (Sondheim). | 1st Aug 1912 | Box 16 \ 1 Scan051 | |
| Departmental memo forwarding a driver's suggestion to supply ready-cut paper packings for the oil sump. | 14th Nov 1912 | Box 16 \ 1 Scan052 | |
| Departmental memo reporting a driver's habit of applying thick gear oil to tappet guides. | 4th Dec 1912 | Box 16 \ 1 Scan053 | |
| From F.H.R. requesting tests on the effect of raising oil pressure on crankshaft bearing wear. | 15th Dec 1913 | Box 16 \ 1 Scan054 | |
| Suggesting a new paragraph for an instruction book regarding the use of extra oil when starting an engine in cold weather. | 1st Jan 1914 | Box 16 \ 1 Scan055 | |
| Proposed amendment to an instruction book regarding the procedure for starting an engine with an extra oil valve. | 17th Feb 1914 | Box 16 \ 1 Scan056 | |
| Cover memo regarding engine lubrication, attaching a related document and requesting a reply. | 18th Feb 1914 | Box 16 \ 1 Scan057 | |
| Containing Mr Hives' disagreement with the procedure for using the extra oil valve during engine warm-up to prevent seizing. | 19th Feb 1914 | Box 16 \ 1 Scan058 | |
| Memo disagreeing with the procedure for depressing the extra oil valve during engine warm-up. | 18th Feb 1914 | Box 16 \ 1 Scan059 | |
| Preference for Prices A Engine Oil for 'Le Canadel' and advice on gear oil stock. | 9th Apr 1914 | Box 16 \ 1 Scan060 | |
| Request for recommendations on modifying the point where the extra oil cuts in on standard cars. | 15th Apr 1914 | Box 16 \ 1 Scan061 | |
| Extract from a report on the Spanish Grand Prix, suggesting an increase in the oil overflow stand pipe height. | 17th Jun 1914 | Box 16 \ 1 Scan062 | |
| Softness of front springs and issues with engine 58NA's rubber buffers and oil pressure. | 11th Jun 1914 | Box 16 \ 1 Scan063 | |
| Extract from a report from Spain discussing high engine oil temperatures and suggesting the use of an oil radiator. | 3rd Jun 1914 | Box 16 \ 1 Scan064 | |
| The renewal of a patent for a lubrication system control device. | 15th Feb 1915 | Box 16 \ 1 Scan065 | |
| Flaw in the extra oil system and proposing an improved automatic system linked to engine HP. | 19th Feb 1915 | Box 16 \ 1 Scan066 | |
| Vacuum-operated devices and extra oil systems for engine regulation. | 24th Feb 1915 | Box 16 \ 1 Scan067 | |
| Patent for lubricating systems in internal combustion engines, detailing issues with oil flow relative to throttle position. | 24th Feb 1915 | Box 16 \ 1 Scan068 | |
| Lubrication apparatus dependent on induction pipe vacuum and its potential as an exclusive fitting for aero engines. | 24th Feb 1915 | Box 16 \ 1 Scan069 | |
| Request for test results on the vacuum in the induction pipe for a patented engine lubricating system. | 1st Mar 1915 | Box 16 \ 1 Scan070 | |
| Questioning the effectiveness of an extra oiling system controlled by vacuum in the induction pipe. | 2nd Mar 1915 | Box 16 \ 1 Scan071 | |
| Report discussing low speed performance, air leaks through a valve and the potential use of a dashpot. | 2nd Mar 1915 | Box 16 \ 1 Scan072 | |
| Request for a copy of a report on vacuum levels in induction pipes for internal combustion engine lubricating systems. | 2nd Mar 1915 | Box 16 \ 1 Scan073 | |
| Extract detailing oil circulation and filter issues on a 200 HP Aero Engine. | 12th Mar 1915 | Box 16 \ 1 Scan074 | |
| Critiquing a system of extra oiling controlled by vacuum in the induction pipe. | 12th Mar 1915 | Box 16 \ 1 Scan075 | |
| Technical memorandum discussing the dash pot action, engine speed, and oil system of an aero engine. | 12th Mar 1915 | Box 16 \ 1 Scan076 | |
| Graph showing when extra oil would work if controlled by vacuum, plotted against throttle opening. | 29th Mar 1915 | Box 16 \ 1 Scan077 | |
| Enclosing a report from Sydney about overoiling engines in Australia, requesting comments. | 29th Mar 1915 | Box 16 \ 1 Scan078 | |
| Technical note on engine overoiling, proposing a different method of feeding oil to the crankshaft to ensure proper lubrication. | 14th Feb 1915 | Box 16 \ 1 Scan079 | |
| Uneven engine cylinder lubrication, highlighting over-oiling at low speeds and under-oiling at high speeds. | 4th Sep 1915 | Box 16 \ 1 Scan080 | |
| Letter discussing over-oiling in engines, specifically addressing the effect of centrifugal force on oil flow within a crank web. | 7th Apr 1915 | Box 16 \ 1 Scan081 | |
| Report page discussing crankshaft oil leaks and methods to tackle piston over-oiling. | 7th Apr 1915 | Box 16 \ 1 Scan082 | |
| Report page detailing the effectiveness of a scheme in preventing over-oiling trouble. | 7th Apr 1915 | Box 16 \ 1 Scan083 | |
| Cover letter for Mr. Harrison's 2,000-mile vehicle report. | 16th Jul 1915 | Box 16 \ 1 Scan084 | |
| Copy of a letter from a customer, J.V. Harrison, expressing satisfaction with his car's performance and service received. | 16th Jul 1915 | Box 16 \ 1 Scan085 | |
| Issues with the lubrication of the rear axle brake mechanism. | 29th Jan 1920 | Box 16 \ 1 Scan086 | |
| Suggesting an improvement to the oil feed for engine gears by moving the feed position. | 26th Aug 1920 | Box 16 \ 1 Scan087 | |
| Tests for extra lubrication on cars for America, expressing doubt about removing it. | 6th Jul 1921 | Box 16 \ 1 Scan088 | |
| Extract about a proposal to remove the extra lubrication scheme for cars destined for America, following issues with seizing pistons. | 6th Jul 1921 | Box 16 \ 1 Scan089 | |
| Scheme for direct lubrication of the sphere by circulating oil from the gearbox. | 7th Jul 1923 | Box 16 \ 1 Scan090 | |
| Gearbox lubrication tests, detailing performance over mileage and discussing potential issues and design changes. | 28th Jul 1923 | Box 16 \ 1 Scan091 | |
| Letter to Claude Johnson regarding the lubrication of a sphere, outlining objections to using a pressure gun due to the likely use of incorrect grease and potential for grit contamination. | 28th Jul 1923 | Box 16 \ 1 Scan092 | |
| Issues with lubrication, comparing the present scheme with a proposed continuous lubrication system. | 30th Nov 1923 | Box 16 \ 1 Scan093 | |
| Accessibility and positioning of various lubricators on component E.A.C.-111. | 30th Nov 1923 | Box 16 \ 1 Scan094 | |
| Recommendation for chassis engine oil change intervals. | 6th May 1924 | Box 16 \ 1 Scan095 | |
| Revising the recommended oil change intervals for the chassis engine. | 2nd Jun 1924 | Box 16 \ 1 Scan096 | |
| The lubrication of a sphere and forwarding related documents. | 10th Aug 1923 | Box 16 \ 1 Scan097 | |
| Lubrication instructions for 20-HP and 40/50HP cars. | 20th Jun 1924 | Box 16 \ 1 Scan098 | |
| Letter discussing various theories on engine wear and the effectiveness of an extra oil system to prevent cold-knocking. | 7th Oct 1925 | Box 16 \ 1 Scan099 | |
| Implementation of an extra oil scheme for the 'Phantom' car. | 7th Oct 1925 | Box 16 \ 1 Scan100 | |
| Design of a vent pipe to prevent oil passing from the crankcase to the cylinder. | 11th Nov 1925 | Box 16 \ 1 Scan101 | |
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