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robmac · 06-07-2007, 09:10 AM

The Ethanol dilutes the hydrocarbons in gas so that the HC emission output is lower(one of the 3 things they check for on an emission test)

06-07-2007, 09:10 AM	#24
robmac Senior Member Join Date: Jan 2005 Location: Nashua,Meredith Posts: 951 Thanks: 213 Thanked 106 Times in 81 Posts	The Ethanol dilutes the hydrocarbons in gas so that the HC emission output is lower(one of the 3 things they check for on an emission test)