Energy Savings with Multigraded Diesel Lubricants — An Experimental Test Design in Winter,Urban Bus Operation

G. Farnsworth; H. Bachman; R. Overton

doi:10.1520/STP46074S

SYMPOSIA PAPER Published: 01 January 1978

STP46074S

Energy Savings with Multigraded Diesel Lubricants — An Experimental Test Design in Winter,Urban Bus Operation

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This paper illustrates how experimental design techniques can be employed to obtain an accurate assessment of multigrade Heavy Duty (HD) performance in the field. Compared to monograde (SAE 40) oil, the use of SAE 15W/40 oil was found to improve vehicle fuel mileage (MPG) as well as oil economy (MPQ). The demonstration, conducted in two groups of 10 city buses each in regular service, was structured to dampen out the effect of numerous incidental variables. Statistical data analysis indicate a “most probable” improvement in fuel mileage of 2.7% as well as a 47% increase on multigraded oil economy.

Author Information

Farnsworth, G., R.

Exxon Chemical Co.

Bachman, H., E.

Exxon Chemical Co.

Overton, R.

Imperial Oil Enterprises, Ltd.

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Details

Developed by Committee: D02

Pages: 25–35

DOI: 10.1520/STP46074S

ISBN-EB: 978-0-8031-6761-2

ISBN-13: 978-0-8031-6697-4

Energy Savings with Multigraded Diesel Lubricants — An Experimental Test Design in Winter,Urban Bus Operation

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