1979-02-01

Fuel Economy Characteristics of Motor Oils as Measured in a Consumer Road Test 790946

A 215 car “consumer type” road test was run to investigate the influence of various motor oils on fuel economy. Under “real life” conditions, the differences between conventional 10W-40 oils and several 10W-40 oils formulated for fuel economy were small. Furthermore, such differences would be difficult for the individual consumer to detect as a result of other variables such as changes in driving patterns and the effect of seasonal temperature changes. The methods for adjusting the data to compensate for these factors are explained.

SAE MOBILUS

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