Clean diesel–what it is – BG Products, Inc.
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Bosch claims breakthrough in new 'clean diesel' technology - Fleet Alliance
Volkswagen's Cheating Unleashed: The Emissions Scandal | Around the World
VW Diesel Crisis Timeline of Events | Cars.com
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VW's Clean Diesel Ads Now Make Us Feel Dirty
The Benefits of Clean-Diesel Far Surpass What You Might Expect - Thomas Built Buses
Euro 6 concerns remain in face of 'clean diesel' campaign - AirQualityNews
How Clean Are Clean Diesel Cars? 5 Facts Based on Pollution - CarsDirect
FTC reviewing VW's 'Clean Diesel' ads for fraudulent claims
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WHAT IS CLEAN DIESEL? - Gem State Diesel & Turbo Repair
What is TDI Clean Diesel?
FTC Charges Volkswagen Deceived Consumers with Its “Clean Diesel” Campaign | Federal Trade Commission
Volkswagen emissions scandal - Wikipedia
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/cdn.vox-cdn.com/uploads/chorus_asset/file/15510976/Screen_Shot_2015-09-22_at_11.54.37_AM_copy.0.0.1442945440.png "Volkswagen's $7.3 billion diesel deception is a blessing in disguise - The Verge")