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Old 07-17-2015, 11:51 AM   #2 (permalink)
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Join Date: Sep 2010
Location: Denver, CO
Posts: 1,300

Colorado - '17 Chevrolet Colorado 4x4 LT
90 day: 23.07 mpg (US)
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A catalyst designed for a diesel engine would definitely help, and even better that it's for your specific engine.

My diesel has no black smoke, B100 is grey.
I'm not coasting, I'm shifting slowly.
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