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Show The Federal Trade Commissiom doesnt seem! The results: Hydrocarbon emissions were reduced an average of over 50 in these very dirty engines. Carbon monoxide emissions were reduced by an average of mere than a third. BY INDEPENDENT Reduction in Hydrocarbons-1- 3 ScottTests lOOOr Start of RESEARCH Clean-U- p O Test End of Test 10 F-3- Scott LabTests Scott Research Laboratories is a nationally recognized research company and testing laboratory engaged in air pollution studies. To determine the effectiveness of cleaning up dirty carburetors and Positive Crankcase Ventilation and thus reducing exhaust emissions (PCV) valves Scott conducted 13 controlled tests in San Bernardino, California during 1968 and 1969. The cars were ail 1966 to 1969 models with V-- 8 engines and automatic transmissions, equipped with standard exhaust emissions control packages and PCV systems. The cars drove stop and go for 5,000 to 20,000 miles on a gasoline typical of some of the poorer quality (deposit-formingasolines sold in the Los Angeles area. This low quality fuel was used purposeiy to speed up the dirtying process and to provide a more severe test non-additi- 11 12 13 Test Number Los Angsles County Sheriffs Cars This test prog ram was conducted in February, 1 970. Six cars (three 1968 and three 1969 models) were selected by the County of Los Angeles Mechanical Department. The cars were Chosen from three different locations in order to include all types of idling, All cars had been driven and 30,000 miles or more, and aii had very dirty engines. Careful measurements of exhaust emission levels were made at a Federal Government laboratory on ail cars before the test. The cars were then switched to Chevron with and returned to service for as little as 678 miles and as driving-stop-and- long-distanc- e, high-spee- -go, d. F-3- 10 much as 2,093 miles. Then emission levels were checked again. The results: Unburned hydrocarbons were reduced by an average of and carbon monoxide by 24, 42. g) driven approximately 2,000 miles. Cleanup was achieved and engine operation returned to normal. ge vehicles of various model years. There are two very significant points about this program: 1) The fleet was exceptionally and 2) the fleet had previously been using a competitive, weii-maintain- major brand premium-grad- e gasoline containing a highly publicized carburetor detergent. Scott Laboratories ran emission tests on these cars before and after they had been driven approximately 2,000 miles on Chevron with Pasadena Tests test program conducted during the Spring This 297-c-ar of 1970, was the largest and most definitive of its kind ever attempted. It was scientifically designed to tell us what would happen if the entire California car population used Emission tests were conducted in the Pasadena California area by Olson Laboratories, an independent testing organization. The cars used were selected at ranof the dom, by zip code area, based on a cross-sectio- n California car population, according to the California Department of Transportation registration figures. The only requirement for participation in the test was that the cars had not used any Chevron gasolines since De- 1 romhor Vv VOlilkvi f i QAQ The cars were given a mechanical check at the Rose Bowl Stadium and measured for exhaust emission levels. The drivers were asked to drive as they always A had but using only Chevron gasolines with return check-i- n date was established based on how long each motorist estimated it would take to drive apF-3- proximately 2,000 miles. Upon completion of the 2,000 miles, the exhaust emission level of each car was again measured by Olson Laboratories. These levels were then compared against the emissions levels taken at the beginning of the test. Orange CountyTest The results: Chevron with achieved an average reduction in hydrocarbon emissions of 13.9, and an average reduction in carbon monoxide emissions of 11.6. This test program conducted between March and July, 1970, involved 53 vehicles selected by officials of the The significance of this test is in its size and scope 297 cars representing a profile cf the total car popula OAlJ'fAri jVirti ?nri ications for tion in iitw wtctivs u i vyCiiiiut1ma Anri ii I i the future in the urgent campaign to reduce air pollution. 0. F-3- 10, low-milea- 0. ve for When thoroughly diriied (idling roughly and stalling), and the cars were switched to Chevron with of high and The results: Unburned hydrocarbon emissions dropped an average of 12.4 and carbon monoxide emissions an of average 27.5. dropped In 0s cross-sectio- n F-3- LABORATORIES the more than 15 years of research and development that resulted in hundreds of scientific tests to assess and evaluate the addihave been conducted tives quality and performance characteristics. The following four test programs are the most recent and most definitive in presenting effectiveness in reducing total emissions from automobiles and thereby contributing to cleaner air. selection represented a .yw Wwu.njf, Will,, UcjJaUkhttlli Ji HcUiopvnawwi than 1,000 cars and trucks. The from its fleet of more F-3- 4 |