Devices and additives to improve fuel economy and reduce pollution
Subtitle: do they really work? : consumer information
Publisher: U.S. Environmental Protection Agency, Office of Transportation and Air Quality
Published: 2011
Place of publication: Washington, D.C.]
Language: eng
Format: [electronic resource] :
Subjects: Automobiles; Fuel consumption; Motors; Exhaust gas; Quality of products
Notes: Title from title screen (viewed on Jan. 3, 2012).

"August 2011."

"EPA-420-F-11-036."