Remarkable Drive out Fine egr cooler cleaning New meaning space clay
EGR cleaning - Volvo Owners Club Forum
EGR Systems & Components
Duramax EGR & DPF Service Tips | Hard Working Trucks
Northern Radiator | EGR Cooler Flush (1 Gallon)
Took off the EGR Cooler the other day to clean. Most intensive job I've done on this car, but 10mpg increase when finished with very slight flow. Still needs to be replaced