horrible fuel mileage
#21
#22
DO NOT RUN LUCAS in your powerstroke.
The WORST thing you can do on a powerstroke is add that stuff. It foams very bad, and foam is the worst thing you can have on a HEUI injector. It will score the internals of the injector, it will hurt your mileage and power.
Its not bad stuff for other stuff, but do NOT add it to your HEUI powerstroke.
#27
#28
Most likely its the fuel bowl drain valve. They are a common leak.
#29