Started by TTSport15, January 10, 2015, 10:46:05 AM
Quote from: IHeartGroceries on January 10, 2015, 12:36:05 PMThe carbon soot is from fuel. It is related to the stratified burn that takes place during cold start.And also very likely from WOT as the mixture riches very quicky. It is a phenomenon found on all DI equipped vehicles. Fuel volatility can likely make it intensify or subside, which explains any seasonal variations in the soot deposits.
Quote from: IHeartGroceries on January 10, 2015, 01:25:27 PMActually, I did read a study which suggested E blends do effectively reduce soot and NOx emissions. Although, for their study, they used E85 exclusively. So, I'll bet you might note a reduction in soot by blending in a couple or three gallons.