| Description | Date | Identifier | |
| Graph comparing the viscosity of 'Prices Motorine C' and 'Lovejoy Oil' at various temperatures. | 27th May 1926 | Box 144 \ 1 scan0152 | |
| Letter from Price's Patent Candle Company regarding a suitable oil for a hydraulic shock absorber. | 27th May 1926 | Box 144 \ 1 scan0153 | |
| Quotation from Price's Patent Candle Company Limited for Dashpot Oil. | 27th May 1926 | Box 144 \ 1 scan0154 | |
| From Price's Patent Candle Company detailing the specifications of Dashpot Oil S/O 514-B. | 27th May 1926 | Box 144 \ 1 scan0155 | |
| Letter to Price Patent Candle Co. Ltd. requesting a specific viscosity oil for shock absorbers. | 21th Jun 1926 | Box 144 \ 1 scan0156 | |
| Graph comparing the viscosity curve of supplied oil versus the required oil at different temperatures. | 5th Jul 1926 | Box 144 \ 1 scan0157 | |
| Internal request to order a 5-gallon drum of Lancastrine No. 91 from Prices Ltd. | 5th Jul 1926 | Box 144 \ 1 scan0158 | |
| Letter to Prices Candle Co. Ltd. requesting a 5-gallon drum of Lancastrine No.91 oil for practical testing. | 5th Jul 1926 | Box 144 \ 1 scan0159 | |
| Availability of specific motor oils for use in hydraulic shock absorbers. | 26th Oct 1926 | Box 144 \ 1 scan0160 | |
| Letter from Prices Patent Candle Co. Ltd. regarding the supply and suitability of Motorine E oil for Ford vehicles. | 25th Oct 1926 | Box 144 \ 1 scan0161 | |
| Letter from Price's Patent Candle Company Limited regarding supply issues and a change of representative for Motorine E in Derby. | 23th May 1927 | Box 144 \ 1 scan0162 | |
| Recommending Castrol XL oil for a 20 HP Chassis, model GRJ-29. | 23th May 1927 | Box 144 \ 1 scan0163 | |
| Letter requesting specifications for engine oils and discussing alternatives to prevent overoiling in 'New Phantom' engines. | 16th Aug 1927 | Box 144 \ 1 scan0164 | |
| And comparing the performance of various lubricating oils, including Mobile 'BB' and Motorine 'C'. | 8th Aug 1927 | Box 144 \ 1 scan0165 | |
| Properties and use of different lubricating oils for steering box experiments. | 29th Aug 1927 | Box 144 \ 1 scan0166 | |
| Pros and cons of different types of lubrication oils and greases, specifically regarding compound vs mineral oils and their bases. | 9th Dec 1927 | Box 144 \ 1 scan0167 | |
| Inquiry into the properties of 'liquid paraffin' as a potential lubricant for magnetos. | 29th Apr 1929 | Box 144 \ 1 scan0168 | |
| Recommendations and experience with Vacuum A and Vacuum BB oils. | 29th Apr 1929 | Box 144 \ 1 scan0169 | |
| Letter to C.C. Wakefield & Co. Ltd. clarifying the branding of different engine oils. | 17th Jul 1929 | Box 144 \ 1 scan0170 | |
| Letter to an oil company regarding test results of their 'Motorine C' oil with a castor oil additive for use in hypoid rear axles. | 12th Nov 1929 | Box 144 \ 1 scan0171 | |
| Meeting with Price's Oil Company to discuss lubricants for hypoid axles. | 10th Jan 1930 | Box 144 \ 1 scan0172 | |
| Laboratory tests on Price's alternative hypoid axle oil for potential standardisation. | 4th Feb 1930 | Box 144 \ 1 scan0173 | |
| Standardisation of an alternative gear compound oil for Phantom II hypoid rear axles. | 17th Feb 1930 | Box 144 \ 1 scan0174 | |
| Search for and testing of alternative gear oils for hypoid rear axle gears. | 14th Feb 1930 | Box 144 \ 1 scan0175 | |
| Development and testing of an alternative oil for hypoid axles to replace Whitmore's Compound. | 4th Apr 1930 | Box 144 \ 1 scan0176 | |
| Rear axle failures on dynamometer tests due to lubricant issues. | 29th Apr 1930 | Box 144 \ 1 scan0177 | |
| The investigation, testing, and supply of a special gear compound from Messrs. Price following axle failures. | 27th May 1930 | Box 144 \ 1 scan0178 | |
| Letter from Price's Patent Candle Company detailing the chemical analysis and performance of their Special Gear Compound. | 24th May 1930 | Box 144 \ 1 scan0179 | |
| Report from Price's Patent Candle Company on the examination of a special gear compound, detailing the effects of water addition. | 24th May 1930 | Box 144 \ 1 scan0180 | |
| Results of compound testing in Phantom II gearboxes. | 11th Jun 1930 | Box 144 \ 1 scan0181 | |
| Use of Whitmore's and Prices lubricating compounds in Phantom II gearboxes and axles. | 12th Jun 1930 | Box 144 \ 1 scan0182 | |
| Change in the specification of Price's Motorine Amber A oil. | 24th Jun 1930 | Box 144 \ 1 scan0183 | |
| Proposed change to 'Motorine Amber A' oil from Price's Oils, outlining the testing requirements before approval. | 1st Jul 1930 | Box 144 \ 1 scan0184 | |
| Unsuitability of Prices Compound for Phantom II gearboxes due to electrolytic action. | 2nd Jul 1930 | Box 144 \ 1 scan0185 | |
| Sourcing a special gear compound from an English supplier to replace an American one. | 24th Jul 1930 | Box 144 \ 1 scan0186 | |
| Letter from Prices Patent Candle Co. Ltd. regarding a modified Special Gear Compound. | 23th Jul 1930 | Box 144 \ 1 scan0187 | |
| Testing a special oil from Prices as a replacement for Whitmores compound in a gearbox and axle. | 10th Sep 1930 | Box 144 \ 1 scan0188 | |
| Request for a comparative viscosity test on Price's 'A' and Wakefield's 'S' gear oils. | 3rd Oct 1930 | Box 144 \ 1 scan0189 | |
| Tests carried out on special hypoid rear axle oils. | 3rd Nov 1930 | Box 144 \ 1 scan0190 | |
| The testing and acceptance of a modified lubricant, Price's Motorine Amber 'A'. | 17th Nov 1930 | Box 144 \ 1 scan0191 | |
| Communication from Price's Patent Candle Company Ltd regarding the standardisation and improvement of Motorine Amber A lubricant. | 13th Nov 1930 | Box 144 \ 1 scan0192 | |
| Laboratory report on the properties of Price's Modified Motorine Amber 'A' oil. | 19th Nov 1930 | Box 144 \ 1 scan0193 | |
| Expediting tests on 'Price's Compound' lubricant as a cheaper alternative for back axles. | 10th Mar 1931 | Box 144 \ 1 scan0194 | |
| Letter from Madrid discussing the high cost of Whitmore No. O Compound due to the Spanish State Oil Monopoly. | 27th Feb 1931 | Box 144 \ 1 scan0195 | |
| Analysis of Price's and Wakefield's lubricating oils. | 24th Aug 1931 | Box 144 \ 1 scan0196 | |
| Requesting two 5-gallon drums of Wakefields XXL oil for testing as an alternative to the standard gearbox oil. | 23th Oct 1931 | Box 144 \ 1 scan0197 | |
| Requesting a comparative analysis of two different gearbox oils. | 30th Oct 1931 | Box 144 \ 1 scan0198 | |
| Laboratory examination and comparison of Castrol 'CXL' and Price's Amber 'A' oils for gear box and rear axle use. | 15th Mar 1932 | Box 144 \ 1 scan0199 | |
| Mileage report on 'XXL' oil testing in experimental department cars. | 24th Oct 1932 | Box 144 \ 1 scan0200 | |
| Suitability of Motorine oils from Price's Oil Company for various car models. | 30th Jan 1933 | Box 144 \ 1 scan0201 | |
| The relative merits of Shell and Motorine oils, detailing a customer's increased consumption with a competitor's oil. | 30th Jan 1933 | Box 144 \ 1 scan0202 | |
| Choice of oil for the 'Bensport' Chassis. | 8th Feb 1938 | Box 144 \ 1 scan0203 | |
| Extract from a letter by Price's Patent Candle Co. Ltd discussing the properties and application of their Motorine C de Luxe oil. | 8th Feb 1938 | Box 144 \ 1 scan0204 | |
| Table of viscosity values for three types of Motorine oil at various temperatures. | 3rd Feb 1933 | Box 144 \ 1 scan0205 | |
| Selection and testing of lubricants for the 1933 R.R. Chassis. | 3rd Feb 1933 | Box 144 \ 1 scan0206 | |
| Suitability of engine oils for the Bensport car. | 14th Feb 1933 | Box 144 \ 1 scan0207 | |
| To the laboratory requesting an analysis of a Mobiloil 'EP' oil sample for the Bentley hypoid rear axle. | 29th Jul 1933 | Box 144 \ 1 scan0208 | |
| Standardisation of Motorine 'C' as the lubricant for the 20/25 gearbox. | 23th Jun 1933 | Box 144 \ 1 scan0209 | |
| Booklet from Price's Oil on a Riley Car's 50,000-mile performance with Motorine C. de Luxe oil. | 30th Oct 1933 | Box 144 \ 1 scan0210 | |
| Thin oil to match Vacuum Arctic Oil, following a visit from Mr. Brooker of Prices' Patent Candle Co. | 24th Jan 1934 | Box 144 \ 1 scan0211 | |
| Letter from Prices Patent Candle Co. Ltd. detailing the specifications for Motorine C, D, and E lubricants. | 18th Jan 1934 | Box 144 \ 1 scan0212 | |
| Internal memorandum discussing the arrangement for supplying Price's and Wakefield's engine oils for new chassis. | 30th Jan 1934 | Box 144 \ 1 scan0213 | |
| Postscript memorandum discussing the continued use of lubricant labels on the chassis and the differing importance placed on this by various oil suppliers. | 6th Feb 1934 | Box 144 \ 1 scan0214 | |
| Supply, labeling, and pricing of a 50/50 blend of Price's and Wakefield's engine oils. | 6th Feb 1934 | Box 144 \ 1 scan0215 | |
| Previous recommendation on the relative importance of four oil companies for lubricants. | 7th Feb 1934 | Box 144 \ 1 scan0216 | |
| Policy on affixing oil labels to cars and the choice of lubricant suppliers. | 7th Feb 1934 | Box 144 \ 1 scan0217 | |
| Letter from Price's Patent Candle Company regarding delayed viscosity test results for Motorine C. | 8th Feb 1934 | Box 144 \ 1 scan0218 | |
| Letter from Price's Patent Candle Company Ltd. providing viscosity data at various temperatures. | 8th Feb 1934 | Box 144 \ 1 scan0219 | |
| History and use of lubricant labels. | 13th Feb 1934 | Box 144 \ 1 scan0220 | |
| Difficulties with Price's Company over the order of recommended lubricants for the Bentley Car. | 5th Apr 1934 | Box 144 \ 1 scan0221 | |
| Ordering of recommended lubricants for Bentley cars, specifically concerning Prices oils. | 7th Apr 1934 | Box 144 \ 1 scan0222 | |
| Letter to Price's Patent Candle Co. Ltd. recommending a thinner grade of oil for winter use, suggesting something similar to Mobiloil AF. | 25th Oct 1934 | Box 144 \ 1 scan0223 | |
| Letter from a supplier recommending 'Motorine M' lubricant for cold weather performance. | 26th Oct 1934 | Box 144 \ 1 scan0224 | |
| Letter from Price's Patent Candle Company Limited enclosing literature for Motorine M. | 26th Oct 1934 | Box 144 \ 1 scan0225 | |
| Testing thinner oils to improve cold weather starting on Bentley and 20/25 models. | 12th Nov 1934 | Box 144 \ 1 scan0226 | |
| Request to order various winter oils for use in experimental cars. | 13th Nov 1934 | Box 144 \ 1 scan0227 | |
| Request to order Price's Motorine 'M' and Single Shell oils for the Experimental Garage. | 20th Dec 1934 | Box 144 \ 1 scan0228 | |
| Urgent internal request to order and dispatch one gallon of Price's Amber 'B' Gear Oil. | 29th Oct 1935 | Box 144 \ 1 scan0229 | |
| Query regarding lubricant recommendations for the Phantom III chassis for an instruction book. | 10th Feb 1936 | Box 144 \ 1 scan0230 | |
| Comparing oil types and capacities for the Phantom II and Phantom III chassis. | 12th Feb 1936 | Box 144 \ 1 scan0231 | |
| To place an official order for Motorine 'C' oil from Messrs. Sanderson & Holmes Ltd. | 11th Mar 1936 | Box 144 \ 1 scan0232 | |
| The testing of a new back axle lubricant from a company called Prices. | 17th Aug 1936 | Box 144 \ 1 scan0233 | |
| Letter from Price's Patent Candle Company Limited regarding the supply of Motorine E.P. lubricant for back axles. | 21th Apr 1936 | Box 144 \ 1 scan0234 | |
| Letter to Price's Patent Candle Co. Ltd. requesting engine oil viscosity charts for oil consumption experiments. | 21th Apr 1936 | Box 144 \ 1 scan0235 | |
| Standardisation of rear axle lubricants and declining to test a new oil. | 21th Aug 1936 | Box 144 \ 1 scan0236 | |
| Oil filter sludge issues on the Phantom III car, recommending a switch from Price's to Castrol oil. | 21th Sep 1936 | Box 144 \ 1 scan0237 | |
| Oil sludge issues in the Phantom III chassis, comparing different motor oils. | 21th Sep 1936 | Box 144 \ 1 scan0238 | |
| Letter to Price's Patent Candle Co. Ltd. concerning oil sludge problems in Phantom III cars. | 24th Sep 1936 | Box 144 \ 1 scan0239 | |
| Page 2 of a letter arranging a meeting with technical representatives. | 24th Sep 1936 | Box 144 \ 1 scan0240 | |
| Letter from Prices Patent Candle Company regarding an oil sludge issue in Phantom III cars. | 26th Sep 1936 | Box 144 \ 1 scan0241 | |
| Letter from Price's Patent Candle Company Limited arranging a meeting for the following week. | 28th Sep 1936 | Box 144 \ 1 scan0242 | |
| Engine oil filter sludging on the Phantom III tappet mechanism, comparing Castrol and Prices engine oils. | 28th Sep 1936 | Box 144 \ 1 scan0243 | |
| Oil sludging issues in the Phantom III tappet mechanism, specifically concerning Price's oil. | 29th Sep 1936 | Box 144 \ 1 scan0244 | |
| Letter to Price's Patent Candle Co. Ltd. confirming the arrangements for Mr. Brooker's visit. | 30th Sep 1936 | Box 144 \ 1 scan0245 | |
| Letter from Price's Patent Candle Company Limited regarding a previous communication and a proposed visit. | 30th Sep 1936 | Box 144 \ 1 scan0246 | |
| Telegram regarding a proposed visit from Brookers to the Experimental Department. | 30th Sep 1936 | Box 144 \ 1 scan0247 | |
| Telegram received by telephone concerning arrangements for a visit to Brooklands. | 30th Sep 1936 | Box 144 \ 1 scan0248 | |
| Engine oil sludging issues in Phantom III cars, comparing the performance of Prices and Castrol oils. | 1st Oct 1936 | Box 144 \ 1 scan0249 | |
| Hydraulic tappets getting choked with sludge when using Price's Motorine 'C' oil. | 3rd Oct 1936 | Box 144 \ 1 scan0250 | |
| Inquiry about a trials car and instructions for using Castrol XL Oil. | 6th Oct 1936 | Box 144 \ 1 scan0251 | |
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