We Tested 4 Fuel Additives on Carbon Buildup: Before and After Borescope Logs
Four 2016 Chevrolet Equinox 2.4L Ecotec engines came through our shop in the same month, all with the same complaint: rough idle, occasional hesitation, and a subtle loss of throttle response. All four had between 62,000 and 71,000 miles. All four had direct injection. We borescoped the intake valves on all four engines before any […]