I live in North Carolina and the only time I have problems with my fuel guage is when I fill my tank with BP gasoline. I am not only referring to one vehicle but two, a 1995 C280 and a 2000 ML320. It doesn't make any difference, the minute I fill my vehicles with this gas the gas gauge shows zero. I have not used this gasoline for about 1-1/2 years for this problem and I have no problems with any other gasolines available in this area (even Kangaroo!). I know BP stands for British Petroleum but they seem to be distancing themselves from this brand with their advertising that now their gasoline is AMOCO! Anyway, I wonder if the amount of sulphur in the gasoline makes a difference. I know that the fuel in Europe is low sulphur and the USA still has high sulphur fuel. Why BP is a problem, I do not know but I do not use it anymore and don't have any problems anymore. To me, BP stands for Bad Petrolelum.

If you have a problem with a specific fuel in your area, don't use it. Find what works and stick with it.