Should I use the whole can of Sea Foam in a bigger engine? [SOLVED]

Good question, Tyler.

For Sea Foam in the gas tank, yes, you can use the whole can. Adding a whole can to the gas tank is a great way to clean up the entire fuel system. 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, add 1 oz of Sea Foam per quart of oil. Do not exceed that ratio.