The check oil light in my 2008 dodge charger stays on

OK, now you added 2 quarts of oil just because someone told you to. Did you check the oil level yourself? That is very suspicious unless your engine is smoking and burning oil. Park the car on a level surface, shut the engine off, and after 30 minutes remove the dip stick and check the oil level. You may find it is overfull. If it is that is just as bad as unde-full. In any case, Change the oil & filter and use a quality filter such as Purolator or Wix and the correct weight oil which will probably be 5w20. Check your owner's manual to be sure. If the oil light is still on, have a oil pressure test run. You may have nothing more than a bad oil pressure sending unit.