Technical Paper
Comparisons of the Effects of Improved Engine Lubricants on Automobile Fuel Economy, Exhaust Emissions, and Lubricating Properties
1982-02-01
821248
Four engine lubricants were evaluated against a reference oil for fuel economy, exhaust emissions, horsepower output, oil consumption, and lubricating properties. Sixty 1977–79 automobiles were used for the evaluation, with each auto accumulating approximately 18,000 miles (28,980 KM). Fuel economy was measured by recording odometer readings and gallons used at each fill-up, and laboratory testing (Federal Test Procedure and Highway Fuel Economy Test) provided two other measures of fuel economy as well as exhaust emissions. Dynamometer horsepower tests were performed and the lubricating properties of each oil were determined by analyzing oil samples taken from the test vehicles at regular intervals.
