Working the bugs out after sitting 12 plus years, maybe 15 years . First start up after getting as much of the fuel system cleaned up and ready to go the motor sounds grate. After a few start ups all went down hill. Pulled IP and injectors. Prep IP for shipping and found a lot of unidentified objects came out of the side cover when removed to drain the fuel. When I first started the project the fuel had a red color , me granddad used off road. Can any one give me some insight as to what if any is the difference between the on and off road fuel other than the die and the tax u pay. After many hrs. of reading posts I am looking at the a few questions . Should I use something to help lube the fuel and what products are out there that can help . I stand to be corrected but it seems that the 6.9 could go 3 to 400 thousand miles and that the fuel systems give or take on how well u take care of it 100 thousand or more. If any builders catch this and have info as to what your clients have used in there systems would be helpful. I do use hot shot treatment in the off road motors that I have at this time and can say that I have had no problems with pumps or injectors. Maybe that was mint to be. As time rolls along the ideas that I get will only be some ones what works for me. I will never say or comment the fact that what was suggested to use will never be a u told me so. I am only looking for ideas. Have a good day