I hated being the only one with two tanks on trips, and still always the first one that needed to stop for gas!
Going from 18 to 30 was an amazing feeling of satisfaction!
Haven't you heard? That's now a standard condition for Ford pickups!
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I don't know if Ford has finally changed the design, but in the EFI years (what, maybe '85 to at least '96 in that older body style truck?) when the FDM (fuel delivery module) in one tank would fail, the failure mode was that the return line would feed the opposite tank. I'm sure that made sense to someone, somewhere, in some committee...
So if you were not aware of this condition, driving the truck would end up with a big overflow situation.
I've still got a HUGE stain on my street where I used to park the '93. It was an unfortunate bit of critical intel that the PO just happened to leave out when I bought the truck.
You learn quickly about that stuff when the fuel just won't stop coming out of the gas cap.
:-[
Paul