I have not given you a performance update in quite awhile. There has not been much change in regards to fuel mileage. One new item that I tried was to extend the life of my main engine fuel filters to 100,000 miles. I was told this was possible if you have a Davco Fuel Filter. I had success in accompolishing the 100,000 mile fuel filter replacement without any issues. I have not had to add any make up oil to the Detroit DD15 engine in between its 50,000 mile maintenance intervals.The Detroit DT12 Transmission continues to impress me. My finding are that the DT12 Transmission has been spending 12 to 18 percent of its time in E-coast. I find it incredible that 12 to 18 percent of the time, we don't need the engine to move the truck. When in E-coast, the transmission disengages which allows for the engine to simply idle. Other than these few new items there is nothing new to report on.
Below, you will find the results from my fuel economy spreadsheets.
