Hi welcome to the forum
Might be a faulty gauge, if so will need replacing. I would fill it up first and see how you get on carry a spare gallon of fuel with you, just in case you run out, they do drink fuel like its going out of fashion.
Has for your sat nav.If its the same asmine I have toselect england first every time I use itbeforeI can enter town and street it do's not do post codes

Might be a faulty gauge, if so will need replacing. I would fill it up first and see how you get on carry a spare gallon of fuel with you, just in case you run out, they do drink fuel like its going out of fashion.
Has for your sat nav.If its the same asmine I have toselect england first every time I use itbeforeI can enter town and street it do's not do post codes