I don't drive my truck that much. Maybe 1 day a week for 40 miles. Does sitting diesel collect water? Because for some reason my water in fuel light keeps coming on and I drain it with plenty of water in the fuel.
I run Stanadyne in my truck and drive it way less than what you do. I always add more than recommended and haven't had an issue yet. Before Stanadyne I used Power Service in the white bottle and didn't have any issues using that.
This is off of Stanadyne's website, this is the Performance Formula that I use-
•Helps Remove Water - special demulsifiers cause tiny water droplets to come out of suspension/emulsion, so the filter/separator can more effectively remove water
•Stabilizes Fuel - antioxidants keep fuel fresher
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