Can you put too much Sea Foam in your vehicle? [SOLVED]

Thanks for the question, Vern. Sea Foam Motor Treatment is made with 100% safe petroleum cleaning and lubricating ingredients. You can safely add a large amount of Sea Foam to your gas tank – there’s no such thing as “too much.” In fact, a high concentration of Sea Foam in the fuel tank works better and faster to clean than a low concentration. 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.

In the oil, do not exceed 1 ounce of Sea Foam per quart of oil.