Is it completely normal for the oil gauge to continue fluctuating after the sending unit has been replaced?

 

Did you put a mechanical gauge on it to make sure the sending unit was the problem?

 

the oil sending unit has already been replaced, as well as the oil switch. The truck had an evap hose leak which was also replaced. oil guage was stable for about 5-6 days when it started fluctuating agian. Dealer states "that is normal for vehicle" PLEASE HELP