- Mar 13, 2009
- South Carolina
I have a 2018 ram 3500 6.7 Cummins 24200 miles I recently added a sinister diesel oil filter bypass to the motor it takes the oil from the top of the oil filter housing there is a plug you remove and add a fitting to connect a line to and it routs to the bypass oil filter housing that's mounted on a bracket furnished in the kit which is mounted to the engine block. From there a line takes the oil from the filter and returns it to the engine through the oil filler location at the front of the engine using a special cap provided. After installing the kit I drove the truck for two days and noticed oil coming from underneath the truck and following the oil to the top of the engine coming from the CCV filter housing at the rear I cleaned all the oil off the engine and put shop towels in that area and drove the truck to verify that is where the leak was. The towels were saturated in oil. I cleaned the area again. I removed the oil bypass from the truck and put it back to stock and drove the truck with no more oil leaks My question is could the oil bypass system be pressurizing the engine causing the oil leak.