Quote:

---

Won't submerging the return line into the gas already in the tank increase the return line pressure?

I know it makes a big difference on my water tanks at the job site, I have to keep the hose out of the water in the tank I'm filling or the flow really slows down.

---

Your talking inches of water back pressure(about 30"
of water to 1 psi)... with the return down in the fuel
it reduces aireation a ton... but if the return is
far enough away or if it has foam there isnt any
problem