Browse Publications Technical Papers 2001-01-1900
2001-05-07

Fuel Economy Gains with Modern Technology, SAE 5W-20 Engine Oils in a GM Engine as Measured in the EPA FTP Test 2001-01-1900

Gains in fuel economy with modern technology, SAE 5W-20 engine oils (GF-3 quality) in two identical 1998 MY Buick Centuries equipped with the 3.1L engine were measured in the EPA FTP test. These oils resulted in 1.0-2.2% gains in combined fuel economy (average 1.5%) over a typical GF-2 quality SAE 5W-30 oil. No significant gains in FE were observed during the cold transient portion of the FTP test. Engine oil temperatures were also reduced by 1-2°C with the SAE 5W-20 oils compared to the SAE 5W-30 oil. Of the two test oils, the one formulated with a Mo-type friction modifier additive was about 0.5% more fuel-efficient than the one formulated with an organic-type FM additive. Of the two vehicles, the one with the inherently poorer FE performance showed higher gains (expressed as percent improvement in FE) with the SAE 5W-20 oils than the other vehicle. Potential carry-over FE effects were observed with the oil containing the organic-type FM additive, but these effects were not verified.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Engine Oil Aging Effects on Fuel Economy as Measured by the EPA FTP Vehicle Dynamometer Test in a GM Engine

2002-01-1635

View Details

TECHNICAL PAPER

Fuel Efficiency of SAE 5W-20 Friction Modified Gasoline Engine Oil

982506

View Details

TECHNICAL PAPER

Shear Stability of Multigrade Crankcase Oils in Cars, Laboratory Engine, and Bench Tests - (Report of the Mechanical Shear Stability Subsection, R & D Div. VII B-1 of ASTM Committee D-2)

720946

View Details

X