I added a gravity flow aux tank in the bed of my 2016 F350. Currently full and in 3 days I fill the truck tank and release the aux tank valve as we move to another CG. The aux tank drains into the truck tank. When the fuel gauge says 3/4 I have a lot of time to find a truck stop to fill both. No codes no problems. I had a GMC with dual tanks and 1st the pump on 1 went out then the switch went out. Ever since I have preferred gravity.
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John & Patty
2022 3855 BR
2019 Lariat F350 4X4 Dually
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