Hi I am new to the group, so Hello! I have a question. My Dad has a 2006 Cummins and when I bought my 3.0 2015, He suggested that I add a pint of oil when I filled up. He said that it adds lubrication to the injectors. Will this help or hurt the 3.0? By the way He has almost 600K on His Cummins. Thank you for your expertise.