On Jan 27, 2:33 pm, Goedjn wrote:
_The filler opening at the truck end has to be higher than the tank_.
Assuming the delivery truck is sitting on the same level as the tank
and the tank will be at least 5 ft high, then a reasonable slope to the
pipe will put it at around 7ft over 20 or 30 ft run.It is also helpful if the fill-spout is somewhere
where the truck driver doesn't have to climb
a ladder to get to it. 7' up seems excessive.

And if that is where it has to be to provide slope to the tank? Point
is that physics may require it and nothing can be done to modify it.
That is why the oil company needs to talk with the owner over the
problem to see if they can come to a meeting of the minds.

I may be that the tank is lower than the driveway level or that the
slope he used to install was excessive. Not enough information in
the OP to tell.

Harry K