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).
The benefits of oil filters, particularly the 'FRAM' brand, in reducing engine wear and oil consumption.
| Identifier | ExFiles\Box 135\3\ scan0234 | |
| Date | 16th February 1938 guessed | |
| -2- h) Elimination of all acids or other harmful by-products American accessory firms have already produced a few which give every satisfaction and they are to be found in use on many passenger and transport vehicles. The most widespread is the "FRAM" mounted on Cadillac, Lincoln, Studebaker and Graham, etc., production cars. With these complete filters a decreased oil consumption has been noticed, and it appears that the lubricating conduits receive only pure oil, which explains the noticed consumption decrease. Professor Clower's witnesses are many:- A Technical Director writes:- "We certainly owe an increased engine wear resistance to these filters. Recently, we dismantled engines which had run for 130,000 km (91,000 miles approx.) and found 3/1000 - 4/1000 m/m.{Mr Moon / Mr Moore} wear; new piston rings were fitted and these engines ran a further 80,000 Km. (50,000 miles) and no re-bore was needed." The "FRAM", and similar filters, uses a cartridge which needs only to be changed about every 10,000 km. on cars and every 15,000 km. on buses and lorries. The price is low. Reverting to previous example of crankcase capacity it is pointed out that in an annual mileage of 25,000 km. (15,000 mi.) the saving in oil amounts to 1,000 francs without considering the reduced engine wear and less frequent overhauls. These filters act not only as mechanical filters but also as chemical purifiers and give the oil a much longer service lif. | ||