How much is too much Sea Foam in a 2015 Dodge Charger? [SOLVED]

Good question, Percy. When it comes to Sea Foam in the gas tank, a high concentration works better and faster than a low concentration for cleaning up the fuel system. It’s safe to add a lot of Sea Foam to fuel. Here’s what I’d do: wait until the tank is low (1/4 -1/8 tank). Add the whole 16 oz can, and then drive for at least 10-20 miles before refueling. It’s safe to add a high concentration like that and it works very well for cleaning fuel residues and deposits.