Hi, all I have a 2008 platinum addition when I fill up my gas tank I can only fill up to 20 gallons from empty. I have a friend that has a 2010 limited and he fills up 24 gallons from empty. I don't know if there is something wrong with my gas tank? Does anyone else gets 20 gallons on a fill up? Also only getting 180 miles on a full tank and that's on a good day I also live in NYC so a lot of city driving.