Mishimoto Baffled Oil Catch Can 2019+ FORD RANGERBlow by is a natural occurrence in any internal combustion engine, but direct injected engines are particularly susceptible to the carbon buildup it can cause. Without fuel washing over the back of the engines intake valves, blow by is free to accumulate and the heat of combustion eventually turns that blow by into hard carbon deposits. As those carbon deposits build up, they rob the 2. 3 liter EcoBoost of air, reducing power and fuel economy. If left