i never noticed it until i filled up on gas today. and im not sure if it was happening b4 or not. i just filled up and when i got home and turned my car off but kept the electical on my gas needle dropped about 1/8 of a tank. i turned it back on and it when back up REAL slow but still lower than it should be for just filling up. would this be a fuel filler problem or my gas gauage itself is going out. or and i just a noob and im worried about something that doesnt matter'

thanks
steve

 

mine goes all the way up after fill up, on 80km it goes down to 3/4.. on about 200km it gets all the way down. on 300km it goes back up to a little lower than 2/4. on 400km it goes all the way down again..

but the fill up light never came on on my dash. and my max had never ran outta gas on me.. but i always fill up on around 430kms..