Does Sea Foam clean E85 gunk in fuel injectors? [SOLVED]

Thanks for the question, Quinn! I’d use Sea Foam High Mileage. It’s made exactly for that – to clean up a fuel system after years of buildup. It will work to clean fuel injectors.

Here’s what I’d do: wait until the tank is low (1/4 -1/8 tank), and add the whole 16 oz can. Then, drive for as long as possible on that tank before refueling. It’s safe to add a high concentration like that and it works very well for cleaning fuel residues and deposits.