Can I add Seam Foam to nearly empty tank, fill it with fuel and then only drive it for 1 mile and let it sit? [SOLVED]

Thanks for the question!

The best way to get the most cleaning power out of a can of Sea Foam is to create a high concentration of Sea Foam in your gas tank.

I like to 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.

Doing that about every 3,000 miles is a great way to keep everything clean and running as best it can.