I have recently bought my first diesel pickup. Being a longtime Dodge owner it was only natural to get the CTD Dodge. It will be used for interstate transportation with an occasional trip to the lake with the bass boat. The TDR has been a great place for information regarding these trucks. I have been running Stanadyne in the truck since the first fillup. I read with interest the comments about PS/MMO and called three different injector services about this mixture. All three strongly recommended against the MMO. One in particular said to run Howes or Lucas instead of the MMO. I plan on oil changes every +/-3750 miles with Rotella T and then Red Line Synthetic at 30,000. With the proper maintenance I am hoping this truck will last 10 years and see me into retirement. Once again, great web site and keep up the good work.