Best Oil Catch Can for GMC Trucks to Reduce Engine Sludge
Modern GMC Sierra and Canyon engines utilize Gasoline Direct Injection (GDI), which keeps fuel economy high but leaves intake valves vulnerable to massive carbon buildup. Without fuel washing over the valves, oily crankcase vapors bake onto the metal, eventually causing rough idles and lost MPGs. After testing seven different separators on a high-mileage 5.3L L83…